[ 118.868738][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 118.869183][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 118.869183][ T72] netdev_get_by_index+0x5e/0x80 [ 118.869183][ T72] fib6_nh_init+0x3d8/0x15b0 [ 118.869183][ T72] ip6_route_info_create+0xf18/0x17d0 [ 118.869183][ T72] addrconf_f6i_alloc+0x244/0x410 [ 118.869183][ T72] ipv6_add_addr+0x411/0x2000 [ 118.869183][ T72] inet6_addr_add+0x30e/0xa40 [ 118.869183][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 118.869183][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.869183][ T72] netlink_rcv_skb+0x130/0x360 [ 118.869183][ T72] netlink_unicast+0x449/0x710 [ 118.869183][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.869183][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.869183][ T72] ___sys_sendmsg+0xee/0x170 [ 118.869183][ T72] __sys_sendmsg+0xcd/0x170 [ 118.869183][ T72] do_syscall_64+0xc6/0x1e0 [ 118.869183][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.869183][ T72] [ 118.871444][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 118.871444][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 118.871444][ T72] ipv6_find_idev+0x102/0x170 [ 118.871444][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 118.871444][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.871444][ T72] netlink_rcv_skb+0x130/0x360 [ 118.871444][ T72] netlink_unicast+0x449/0x710 [ 118.871444][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.871444][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.871444][ T72] ___sys_sendmsg+0xee/0x170 [ 118.871444][ T72] __sys_sendmsg+0xcd/0x170 [ 118.871444][ T72] do_syscall_64+0xc6/0x1e0 [ 118.871444][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.871444][ T72] [ 118.873007][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 118.873007][ T72] neigh_parms_alloc+0x1e5/0x510 [ 118.873007][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 118.873007][ T72] ipv6_find_idev+0x102/0x170 [ 118.873007][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 118.873007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.873007][ T72] netlink_rcv_skb+0x130/0x360 [ 118.873007][ T72] netlink_unicast+0x449/0x710 [ 118.873007][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.873007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.873007][ T72] ___sys_sendmsg+0xee/0x170 [ 118.873007][ T72] __sys_sendmsg+0xcd/0x170 [ 118.873007][ T72] do_syscall_64+0xc6/0x1e0 [ 118.873007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.873007][ T72] [ 118.874699][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 118.875098][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 118.875098][ T72] netdev_get_by_index+0x5e/0x80 [ 118.875098][ T72] fib6_nh_init+0x3d8/0x15b0 [ 118.875098][ T72] ip6_route_info_create+0xf18/0x17d0 [ 118.875098][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 118.875098][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 118.875098][ T72] addrconf_join_anycast+0x1c0/0x220 [ 118.875098][ T72] dev_forward_change+0x2a6/0x7b0 [ 118.875098][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 118.875098][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 118.875098][ T72] proc_sys_call_handler+0x403/0x5e0 [ 118.875098][ T72] vfs_write+0x9e5/0x10a0 [ 118.875098][ T72] ksys_write+0xf5/0x1e0 [ 118.875098][ T72] do_syscall_64+0xc6/0x1e0 [ 118.875098][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.875098][ T72] [ 118.876953][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 118.876953][ T72] netdev_get_by_index+0x5e/0x80 [ 118.876953][ T72] fib6_nh_init+0x3d8/0x15b0 [ 118.876953][ T72] ip6_route_info_create+0xf18/0x17d0 [ 118.876953][ T72] addrconf_f6i_alloc+0x244/0x410 [ 118.876953][ T72] ipv6_add_addr+0x411/0x2000 [ 118.876953][ T72] inet6_addr_add+0x30e/0xa40 [ 118.876953][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 118.876953][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.876953][ T72] netlink_rcv_skb+0x130/0x360 [ 118.876953][ T72] netlink_unicast+0x449/0x710 [ 118.876953][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.876953][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.876953][ T72] ___sys_sendmsg+0xee/0x170 [ 118.876953][ T72] __sys_sendmsg+0xcd/0x170 [ 118.876953][ T72] do_syscall_64+0xc6/0x1e0 [ 118.876953][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.876953][ T72] [ 118.878950][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 118.878950][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 118.878950][ T72] ipv6_find_idev+0x102/0x170 [ 118.878950][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 118.878950][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.878950][ T72] netlink_rcv_skb+0x130/0x360 [ 118.878950][ T72] netlink_unicast+0x449/0x710 [ 118.878950][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.878950][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.878950][ T72] ___sys_sendmsg+0xee/0x170 [ 118.878950][ T72] __sys_sendmsg+0xcd/0x170 [ 118.878950][ T72] do_syscall_64+0xc6/0x1e0 [ 118.878950][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.878950][ T72] [ 118.880504][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 118.880504][ T72] neigh_parms_alloc+0x1e5/0x510 [ 118.880504][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 118.880504][ T72] ipv6_find_idev+0x102/0x170 [ 118.880504][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 118.880504][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 118.880504][ T72] netlink_rcv_skb+0x130/0x360 [ 118.880504][ T72] netlink_unicast+0x449/0x710 [ 118.880504][ T72] netlink_sendmsg+0x723/0xbe0 [ 118.880504][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 118.880504][ T72] ___sys_sendmsg+0xee/0x170 [ 118.880504][ T72] __sys_sendmsg+0xcd/0x170 [ 118.880504][ T72] do_syscall_64+0xc6/0x1e0 [ 118.880504][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.880504][ T72] [ 118.882166][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 118.882405][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 118.882405][ T72] dst_init+0x84/0x4a0 [ 118.882405][ T72] dst_alloc+0x97/0x150 [ 118.882405][ T72] ip6_dst_alloc+0x23/0x90 [ 118.882405][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 118.882405][ T72] ip6_pol_route+0x56f/0x840 [ 118.882405][ T72] fib6_rule_lookup+0x227/0x600 [ 118.882405][ T72] ip6_route_output_flags+0x251/0x460 [ 118.882405][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 118.882405][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 118.882405][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 118.882405][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 118.882405][ T72] ip6_datagram_connect+0x2c/0x50 [ 118.882405][ T72] __sys_connect+0x217/0x2a0 [ 118.882405][ T72] __x64_sys_connect+0x72/0xb0 [ 118.882405][ T72] do_syscall_64+0xc6/0x1e0 [ 118.882405][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 118.882405][ T72] [ 129.029608][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 129.029959][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 129.029959][ T72] netdev_get_by_index+0x5e/0x80 [ 129.029959][ T72] fib6_nh_init+0x3d8/0x15b0 [ 129.029959][ T72] ip6_route_info_create+0xf18/0x17d0 [ 129.029959][ T72] addrconf_f6i_alloc+0x244/0x410 [ 129.029959][ T72] ipv6_add_addr+0x411/0x2000 [ 129.029959][ T72] inet6_addr_add+0x30e/0xa40 [ 129.029959][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 129.029959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.029959][ T72] netlink_rcv_skb+0x130/0x360 [ 129.029959][ T72] netlink_unicast+0x449/0x710 [ 129.029959][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.029959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.029959][ T72] ___sys_sendmsg+0xee/0x170 [ 129.029959][ T72] __sys_sendmsg+0xcd/0x170 [ 129.029959][ T72] do_syscall_64+0xc6/0x1e0 [ 129.029959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.029959][ T72] [ 129.032161][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 129.032161][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 129.032161][ T72] ipv6_find_idev+0x102/0x170 [ 129.032161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 129.032161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.032161][ T72] netlink_rcv_skb+0x130/0x360 [ 129.032161][ T72] netlink_unicast+0x449/0x710 [ 129.032161][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.032161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.032161][ T72] ___sys_sendmsg+0xee/0x170 [ 129.032161][ T72] __sys_sendmsg+0xcd/0x170 [ 129.032161][ T72] do_syscall_64+0xc6/0x1e0 [ 129.032161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.032161][ T72] [ 129.033838][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 129.033838][ T72] neigh_parms_alloc+0x1e5/0x510 [ 129.033838][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 129.033838][ T72] ipv6_find_idev+0x102/0x170 [ 129.033838][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 129.033838][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.033838][ T72] netlink_rcv_skb+0x130/0x360 [ 129.033838][ T72] netlink_unicast+0x449/0x710 [ 129.033838][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.033838][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.033838][ T72] ___sys_sendmsg+0xee/0x170 [ 129.033838][ T72] __sys_sendmsg+0xcd/0x170 [ 129.033838][ T72] do_syscall_64+0xc6/0x1e0 [ 129.033838][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.033838][ T72] [ 129.035723][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 129.036016][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 129.036016][ T72] netdev_get_by_index+0x5e/0x80 [ 129.036016][ T72] fib6_nh_init+0x3d8/0x15b0 [ 129.036016][ T72] ip6_route_info_create+0xf18/0x17d0 [ 129.036016][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 129.036016][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 129.036016][ T72] addrconf_join_anycast+0x1c0/0x220 [ 129.036016][ T72] dev_forward_change+0x2a6/0x7b0 [ 129.036016][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 129.036016][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 129.036016][ T72] proc_sys_call_handler+0x403/0x5e0 [ 129.036016][ T72] vfs_write+0x9e5/0x10a0 [ 129.036016][ T72] ksys_write+0xf5/0x1e0 [ 129.036016][ T72] do_syscall_64+0xc6/0x1e0 [ 129.036016][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.036016][ T72] [ 129.038220][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 129.038220][ T72] netdev_get_by_index+0x5e/0x80 [ 129.038220][ T72] fib6_nh_init+0x3d8/0x15b0 [ 129.038220][ T72] ip6_route_info_create+0xf18/0x17d0 [ 129.038220][ T72] addrconf_f6i_alloc+0x244/0x410 [ 129.038220][ T72] ipv6_add_addr+0x411/0x2000 [ 129.038220][ T72] inet6_addr_add+0x30e/0xa40 [ 129.038220][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 129.038220][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.038220][ T72] netlink_rcv_skb+0x130/0x360 [ 129.038220][ T72] netlink_unicast+0x449/0x710 [ 129.038220][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.038220][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.038220][ T72] ___sys_sendmsg+0xee/0x170 [ 129.038220][ T72] __sys_sendmsg+0xcd/0x170 [ 129.038220][ T72] do_syscall_64+0xc6/0x1e0 [ 129.038220][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.038220][ T72] [ 129.040780][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 129.040780][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 129.040780][ T72] ipv6_find_idev+0x102/0x170 [ 129.040780][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 129.040780][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.040780][ T72] netlink_rcv_skb+0x130/0x360 [ 129.040780][ T72] netlink_unicast+0x449/0x710 [ 129.040780][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.040780][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.040780][ T72] ___sys_sendmsg+0xee/0x170 [ 129.040780][ T72] __sys_sendmsg+0xcd/0x170 [ 129.040780][ T72] do_syscall_64+0xc6/0x1e0 [ 129.040780][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.040780][ T72] [ 129.042633][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 129.042633][ T72] neigh_parms_alloc+0x1e5/0x510 [ 129.042633][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 129.042633][ T72] ipv6_find_idev+0x102/0x170 [ 129.042633][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 129.042633][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 129.042633][ T72] netlink_rcv_skb+0x130/0x360 [ 129.042633][ T72] netlink_unicast+0x449/0x710 [ 129.042633][ T72] netlink_sendmsg+0x723/0xbe0 [ 129.042633][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 129.042633][ T72] ___sys_sendmsg+0xee/0x170 [ 129.042633][ T72] __sys_sendmsg+0xcd/0x170 [ 129.042633][ T72] do_syscall_64+0xc6/0x1e0 [ 129.042633][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.042633][ T72] [ 129.044642][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 129.044900][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 129.044900][ T72] dst_init+0x84/0x4a0 [ 129.044900][ T72] dst_alloc+0x97/0x150 [ 129.044900][ T72] ip6_dst_alloc+0x23/0x90 [ 129.044900][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 129.044900][ T72] ip6_pol_route+0x56f/0x840 [ 129.044900][ T72] fib6_rule_lookup+0x227/0x600 [ 129.044900][ T72] ip6_route_output_flags+0x251/0x460 [ 129.044900][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 129.044900][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 129.044900][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 129.044900][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 129.044900][ T72] ip6_datagram_connect+0x2c/0x50 [ 129.044900][ T72] __sys_connect+0x217/0x2a0 [ 129.044900][ T72] __x64_sys_connect+0x72/0xb0 [ 129.044900][ T72] do_syscall_64+0xc6/0x1e0 [ 129.044900][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 129.044900][ T72] [ 139.140712][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 139.141154][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 139.141154][ T72] netdev_get_by_index+0x5e/0x80 [ 139.141154][ T72] fib6_nh_init+0x3d8/0x15b0 [ 139.141154][ T72] ip6_route_info_create+0xf18/0x17d0 [ 139.141154][ T72] addrconf_f6i_alloc+0x244/0x410 [ 139.141154][ T72] ipv6_add_addr+0x411/0x2000 [ 139.141154][ T72] inet6_addr_add+0x30e/0xa40 [ 139.141154][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 139.141154][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.141154][ T72] netlink_rcv_skb+0x130/0x360 [ 139.141154][ T72] netlink_unicast+0x449/0x710 [ 139.141154][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.141154][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.141154][ T72] ___sys_sendmsg+0xee/0x170 [ 139.141154][ T72] __sys_sendmsg+0xcd/0x170 [ 139.141154][ T72] do_syscall_64+0xc6/0x1e0 [ 139.141154][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.141154][ T72] [ 139.143324][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 139.143324][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 139.143324][ T72] ipv6_find_idev+0x102/0x170 [ 139.143324][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 139.143324][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.143324][ T72] netlink_rcv_skb+0x130/0x360 [ 139.143324][ T72] netlink_unicast+0x449/0x710 [ 139.143324][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.143324][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.143324][ T72] ___sys_sendmsg+0xee/0x170 [ 139.143324][ T72] __sys_sendmsg+0xcd/0x170 [ 139.143324][ T72] do_syscall_64+0xc6/0x1e0 [ 139.143324][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.143324][ T72] [ 139.144992][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 139.144992][ T72] neigh_parms_alloc+0x1e5/0x510 [ 139.144992][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 139.144992][ T72] ipv6_find_idev+0x102/0x170 [ 139.144992][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 139.144992][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.144992][ T72] netlink_rcv_skb+0x130/0x360 [ 139.144992][ T72] netlink_unicast+0x449/0x710 [ 139.144992][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.144992][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.144992][ T72] ___sys_sendmsg+0xee/0x170 [ 139.144992][ T72] __sys_sendmsg+0xcd/0x170 [ 139.144992][ T72] do_syscall_64+0xc6/0x1e0 [ 139.144992][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.144992][ T72] [ 139.146818][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 139.147103][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 139.147103][ T72] netdev_get_by_index+0x5e/0x80 [ 139.147103][ T72] fib6_nh_init+0x3d8/0x15b0 [ 139.147103][ T72] ip6_route_info_create+0xf18/0x17d0 [ 139.147103][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 139.147103][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 139.147103][ T72] addrconf_join_anycast+0x1c0/0x220 [ 139.147103][ T72] dev_forward_change+0x2a6/0x7b0 [ 139.147103][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 139.147103][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 139.147103][ T72] proc_sys_call_handler+0x403/0x5e0 [ 139.147103][ T72] vfs_write+0x9e5/0x10a0 [ 139.147103][ T72] ksys_write+0xf5/0x1e0 [ 139.147103][ T72] do_syscall_64+0xc6/0x1e0 [ 139.147103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.147103][ T72] [ 139.149107][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 139.149107][ T72] netdev_get_by_index+0x5e/0x80 [ 139.149107][ T72] fib6_nh_init+0x3d8/0x15b0 [ 139.149107][ T72] ip6_route_info_create+0xf18/0x17d0 [ 139.149107][ T72] addrconf_f6i_alloc+0x244/0x410 [ 139.149107][ T72] ipv6_add_addr+0x411/0x2000 [ 139.149107][ T72] inet6_addr_add+0x30e/0xa40 [ 139.149107][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 139.149107][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.149107][ T72] netlink_rcv_skb+0x130/0x360 [ 139.149107][ T72] netlink_unicast+0x449/0x710 [ 139.149107][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.149107][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.149107][ T72] ___sys_sendmsg+0xee/0x170 [ 139.149107][ T72] __sys_sendmsg+0xcd/0x170 [ 139.149107][ T72] do_syscall_64+0xc6/0x1e0 [ 139.149107][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.149107][ T72] [ 139.151253][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 139.151253][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 139.151253][ T72] ipv6_find_idev+0x102/0x170 [ 139.151253][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 139.151253][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.151253][ T72] netlink_rcv_skb+0x130/0x360 [ 139.151253][ T72] netlink_unicast+0x449/0x710 [ 139.151253][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.151253][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.151253][ T72] ___sys_sendmsg+0xee/0x170 [ 139.151253][ T72] __sys_sendmsg+0xcd/0x170 [ 139.151253][ T72] do_syscall_64+0xc6/0x1e0 [ 139.151253][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.151253][ T72] [ 139.152918][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 139.152918][ T72] neigh_parms_alloc+0x1e5/0x510 [ 139.152918][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 139.152918][ T72] ipv6_find_idev+0x102/0x170 [ 139.152918][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 139.152918][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 139.152918][ T72] netlink_rcv_skb+0x130/0x360 [ 139.152918][ T72] netlink_unicast+0x449/0x710 [ 139.152918][ T72] netlink_sendmsg+0x723/0xbe0 [ 139.152918][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 139.152918][ T72] ___sys_sendmsg+0xee/0x170 [ 139.152918][ T72] __sys_sendmsg+0xcd/0x170 [ 139.152918][ T72] do_syscall_64+0xc6/0x1e0 [ 139.152918][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.152918][ T72] [ 139.154736][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 139.154994][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 139.154994][ T72] dst_init+0x84/0x4a0 [ 139.154994][ T72] dst_alloc+0x97/0x150 [ 139.154994][ T72] ip6_dst_alloc+0x23/0x90 [ 139.154994][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 139.154994][ T72] ip6_pol_route+0x56f/0x840 [ 139.154994][ T72] fib6_rule_lookup+0x227/0x600 [ 139.154994][ T72] ip6_route_output_flags+0x251/0x460 [ 139.154994][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 139.154994][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 139.154994][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 139.154994][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 139.154994][ T72] ip6_datagram_connect+0x2c/0x50 [ 139.154994][ T72] __sys_connect+0x217/0x2a0 [ 139.154994][ T72] __x64_sys_connect+0x72/0xb0 [ 139.154994][ T72] do_syscall_64+0xc6/0x1e0 [ 139.154994][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 139.154994][ T72] [ 149.260612][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 149.260961][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 149.260961][ T72] netdev_get_by_index+0x5e/0x80 [ 149.260961][ T72] fib6_nh_init+0x3d8/0x15b0 [ 149.260961][ T72] ip6_route_info_create+0xf18/0x17d0 [ 149.260961][ T72] addrconf_f6i_alloc+0x244/0x410 [ 149.260961][ T72] ipv6_add_addr+0x411/0x2000 [ 149.260961][ T72] inet6_addr_add+0x30e/0xa40 [ 149.260961][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 149.260961][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.260961][ T72] netlink_rcv_skb+0x130/0x360 [ 149.260961][ T72] netlink_unicast+0x449/0x710 [ 149.260961][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.260961][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.260961][ T72] ___sys_sendmsg+0xee/0x170 [ 149.260961][ T72] __sys_sendmsg+0xcd/0x170 [ 149.260961][ T72] do_syscall_64+0xc6/0x1e0 [ 149.260961][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.260961][ T72] [ 149.263138][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 149.263138][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 149.263138][ T72] ipv6_find_idev+0x102/0x170 [ 149.263138][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 149.263138][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.263138][ T72] netlink_rcv_skb+0x130/0x360 [ 149.263138][ T72] netlink_unicast+0x449/0x710 [ 149.263138][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.263138][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.263138][ T72] ___sys_sendmsg+0xee/0x170 [ 149.263138][ T72] __sys_sendmsg+0xcd/0x170 [ 149.263138][ T72] do_syscall_64+0xc6/0x1e0 [ 149.263138][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.263138][ T72] [ 149.264799][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 149.264799][ T72] neigh_parms_alloc+0x1e5/0x510 [ 149.264799][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 149.264799][ T72] ipv6_find_idev+0x102/0x170 [ 149.264799][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 149.264799][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.264799][ T72] netlink_rcv_skb+0x130/0x360 [ 149.264799][ T72] netlink_unicast+0x449/0x710 [ 149.264799][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.264799][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.264799][ T72] ___sys_sendmsg+0xee/0x170 [ 149.264799][ T72] __sys_sendmsg+0xcd/0x170 [ 149.264799][ T72] do_syscall_64+0xc6/0x1e0 [ 149.264799][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.264799][ T72] [ 149.266654][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 149.266991][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 149.266991][ T72] netdev_get_by_index+0x5e/0x80 [ 149.266991][ T72] fib6_nh_init+0x3d8/0x15b0 [ 149.266991][ T72] ip6_route_info_create+0xf18/0x17d0 [ 149.266991][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 149.266991][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 149.266991][ T72] addrconf_join_anycast+0x1c0/0x220 [ 149.266991][ T72] dev_forward_change+0x2a6/0x7b0 [ 149.266991][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 149.266991][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 149.266991][ T72] proc_sys_call_handler+0x403/0x5e0 [ 149.266991][ T72] vfs_write+0x9e5/0x10a0 [ 149.266991][ T72] ksys_write+0xf5/0x1e0 [ 149.266991][ T72] do_syscall_64+0xc6/0x1e0 [ 149.266991][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.266991][ T72] [ 149.269007][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 149.269007][ T72] netdev_get_by_index+0x5e/0x80 [ 149.269007][ T72] fib6_nh_init+0x3d8/0x15b0 [ 149.269007][ T72] ip6_route_info_create+0xf18/0x17d0 [ 149.269007][ T72] addrconf_f6i_alloc+0x244/0x410 [ 149.269007][ T72] ipv6_add_addr+0x411/0x2000 [ 149.269007][ T72] inet6_addr_add+0x30e/0xa40 [ 149.269007][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 149.269007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.269007][ T72] netlink_rcv_skb+0x130/0x360 [ 149.269007][ T72] netlink_unicast+0x449/0x710 [ 149.269007][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.269007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.269007][ T72] ___sys_sendmsg+0xee/0x170 [ 149.269007][ T72] __sys_sendmsg+0xcd/0x170 [ 149.269007][ T72] do_syscall_64+0xc6/0x1e0 [ 149.269007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.269007][ T72] [ 149.271181][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 149.271181][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 149.271181][ T72] ipv6_find_idev+0x102/0x170 [ 149.271181][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 149.271181][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.271181][ T72] netlink_rcv_skb+0x130/0x360 [ 149.271181][ T72] netlink_unicast+0x449/0x710 [ 149.271181][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.271181][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.271181][ T72] ___sys_sendmsg+0xee/0x170 [ 149.271181][ T72] __sys_sendmsg+0xcd/0x170 [ 149.271181][ T72] do_syscall_64+0xc6/0x1e0 [ 149.271181][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.271181][ T72] [ 149.272839][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 149.272839][ T72] neigh_parms_alloc+0x1e5/0x510 [ 149.272839][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 149.272839][ T72] ipv6_find_idev+0x102/0x170 [ 149.272839][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 149.272839][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 149.272839][ T72] netlink_rcv_skb+0x130/0x360 [ 149.272839][ T72] netlink_unicast+0x449/0x710 [ 149.272839][ T72] netlink_sendmsg+0x723/0xbe0 [ 149.272839][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 149.272839][ T72] ___sys_sendmsg+0xee/0x170 [ 149.272839][ T72] __sys_sendmsg+0xcd/0x170 [ 149.272839][ T72] do_syscall_64+0xc6/0x1e0 [ 149.272839][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.272839][ T72] [ 149.274766][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 149.275033][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 149.275033][ T72] dst_init+0x84/0x4a0 [ 149.275033][ T72] dst_alloc+0x97/0x150 [ 149.275033][ T72] ip6_dst_alloc+0x23/0x90 [ 149.275033][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 149.275033][ T72] ip6_pol_route+0x56f/0x840 [ 149.275033][ T72] fib6_rule_lookup+0x227/0x600 [ 149.275033][ T72] ip6_route_output_flags+0x251/0x460 [ 149.275033][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 149.275033][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 149.275033][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 149.275033][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 149.275033][ T72] ip6_datagram_connect+0x2c/0x50 [ 149.275033][ T72] __sys_connect+0x217/0x2a0 [ 149.275033][ T72] __x64_sys_connect+0x72/0xb0 [ 149.275033][ T72] do_syscall_64+0xc6/0x1e0 [ 149.275033][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 149.275033][ T72] [ 159.420620][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 159.421049][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 159.421049][ T72] netdev_get_by_index+0x5e/0x80 [ 159.421049][ T72] fib6_nh_init+0x3d8/0x15b0 [ 159.421049][ T72] ip6_route_info_create+0xf18/0x17d0 [ 159.421049][ T72] addrconf_f6i_alloc+0x244/0x410 [ 159.421049][ T72] ipv6_add_addr+0x411/0x2000 [ 159.421049][ T72] inet6_addr_add+0x30e/0xa40 [ 159.421049][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 159.421049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.421049][ T72] netlink_rcv_skb+0x130/0x360 [ 159.421049][ T72] netlink_unicast+0x449/0x710 [ 159.421049][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.421049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.421049][ T72] ___sys_sendmsg+0xee/0x170 [ 159.421049][ T72] __sys_sendmsg+0xcd/0x170 [ 159.421049][ T72] do_syscall_64+0xc6/0x1e0 [ 159.421049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.421049][ T72] [ 159.423305][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 159.423305][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 159.423305][ T72] ipv6_find_idev+0x102/0x170 [ 159.423305][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 159.423305][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.423305][ T72] netlink_rcv_skb+0x130/0x360 [ 159.423305][ T72] netlink_unicast+0x449/0x710 [ 159.423305][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.423305][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.423305][ T72] ___sys_sendmsg+0xee/0x170 [ 159.423305][ T72] __sys_sendmsg+0xcd/0x170 [ 159.423305][ T72] do_syscall_64+0xc6/0x1e0 [ 159.423305][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.423305][ T72] [ 159.425049][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 159.425049][ T72] neigh_parms_alloc+0x1e5/0x510 [ 159.425049][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 159.425049][ T72] ipv6_find_idev+0x102/0x170 [ 159.425049][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 159.425049][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.425049][ T72] netlink_rcv_skb+0x130/0x360 [ 159.425049][ T72] netlink_unicast+0x449/0x710 [ 159.425049][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.425049][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.425049][ T72] ___sys_sendmsg+0xee/0x170 [ 159.425049][ T72] __sys_sendmsg+0xcd/0x170 [ 159.425049][ T72] do_syscall_64+0xc6/0x1e0 [ 159.425049][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.425049][ T72] [ 159.426945][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 159.427247][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 159.427247][ T72] netdev_get_by_index+0x5e/0x80 [ 159.427247][ T72] fib6_nh_init+0x3d8/0x15b0 [ 159.427247][ T72] ip6_route_info_create+0xf18/0x17d0 [ 159.427247][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 159.427247][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 159.427247][ T72] addrconf_join_anycast+0x1c0/0x220 [ 159.427247][ T72] dev_forward_change+0x2a6/0x7b0 [ 159.427247][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 159.427247][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 159.427247][ T72] proc_sys_call_handler+0x403/0x5e0 [ 159.427247][ T72] vfs_write+0x9e5/0x10a0 [ 159.427247][ T72] ksys_write+0xf5/0x1e0 [ 159.427247][ T72] do_syscall_64+0xc6/0x1e0 [ 159.427247][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.427247][ T72] [ 159.429330][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 159.429330][ T72] netdev_get_by_index+0x5e/0x80 [ 159.429330][ T72] fib6_nh_init+0x3d8/0x15b0 [ 159.429330][ T72] ip6_route_info_create+0xf18/0x17d0 [ 159.429330][ T72] addrconf_f6i_alloc+0x244/0x410 [ 159.429330][ T72] ipv6_add_addr+0x411/0x2000 [ 159.429330][ T72] inet6_addr_add+0x30e/0xa40 [ 159.429330][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 159.429330][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.429330][ T72] netlink_rcv_skb+0x130/0x360 [ 159.429330][ T72] netlink_unicast+0x449/0x710 [ 159.429330][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.429330][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.429330][ T72] ___sys_sendmsg+0xee/0x170 [ 159.429330][ T72] __sys_sendmsg+0xcd/0x170 [ 159.429330][ T72] do_syscall_64+0xc6/0x1e0 [ 159.429330][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.429330][ T72] [ 159.431584][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 159.431584][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 159.431584][ T72] ipv6_find_idev+0x102/0x170 [ 159.431584][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 159.431584][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.431584][ T72] netlink_rcv_skb+0x130/0x360 [ 159.431584][ T72] netlink_unicast+0x449/0x710 [ 159.431584][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.431584][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.431584][ T72] ___sys_sendmsg+0xee/0x170 [ 159.431584][ T72] __sys_sendmsg+0xcd/0x170 [ 159.431584][ T72] do_syscall_64+0xc6/0x1e0 [ 159.431584][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.431584][ T72] [ 159.433312][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 159.433312][ T72] neigh_parms_alloc+0x1e5/0x510 [ 159.433312][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 159.433312][ T72] ipv6_find_idev+0x102/0x170 [ 159.433312][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 159.433312][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 159.433312][ T72] netlink_rcv_skb+0x130/0x360 [ 159.433312][ T72] netlink_unicast+0x449/0x710 [ 159.433312][ T72] netlink_sendmsg+0x723/0xbe0 [ 159.433312][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 159.433312][ T72] ___sys_sendmsg+0xee/0x170 [ 159.433312][ T72] __sys_sendmsg+0xcd/0x170 [ 159.433312][ T72] do_syscall_64+0xc6/0x1e0 [ 159.433312][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.433312][ T72] [ 159.435198][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 159.435463][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 159.435463][ T72] dst_init+0x84/0x4a0 [ 159.435463][ T72] dst_alloc+0x97/0x150 [ 159.435463][ T72] ip6_dst_alloc+0x23/0x90 [ 159.435463][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 159.435463][ T72] ip6_pol_route+0x56f/0x840 [ 159.435463][ T72] fib6_rule_lookup+0x227/0x600 [ 159.435463][ T72] ip6_route_output_flags+0x251/0x460 [ 159.435463][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 159.435463][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 159.435463][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 159.435463][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 159.435463][ T72] ip6_datagram_connect+0x2c/0x50 [ 159.435463][ T72] __sys_connect+0x217/0x2a0 [ 159.435463][ T72] __x64_sys_connect+0x72/0xb0 [ 159.435463][ T72] do_syscall_64+0xc6/0x1e0 [ 159.435463][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 159.435463][ T72] [ 169.596615][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 169.597007][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 169.597007][ T72] netdev_get_by_index+0x5e/0x80 [ 169.597007][ T72] fib6_nh_init+0x3d8/0x15b0 [ 169.597007][ T72] ip6_route_info_create+0xf18/0x17d0 [ 169.597007][ T72] addrconf_f6i_alloc+0x244/0x410 [ 169.597007][ T72] ipv6_add_addr+0x411/0x2000 [ 169.597007][ T72] inet6_addr_add+0x30e/0xa40 [ 169.597007][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 169.597007][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.597007][ T72] netlink_rcv_skb+0x130/0x360 [ 169.597007][ T72] netlink_unicast+0x449/0x710 [ 169.597007][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.597007][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.597007][ T72] ___sys_sendmsg+0xee/0x170 [ 169.597007][ T72] __sys_sendmsg+0xcd/0x170 [ 169.597007][ T72] do_syscall_64+0xc6/0x1e0 [ 169.597007][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.597007][ T72] [ 169.599235][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 169.599235][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 169.599235][ T72] ipv6_find_idev+0x102/0x170 [ 169.599235][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 169.599235][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.599235][ T72] netlink_rcv_skb+0x130/0x360 [ 169.599235][ T72] netlink_unicast+0x449/0x710 [ 169.599235][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.599235][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.599235][ T72] ___sys_sendmsg+0xee/0x170 [ 169.599235][ T72] __sys_sendmsg+0xcd/0x170 [ 169.599235][ T72] do_syscall_64+0xc6/0x1e0 [ 169.599235][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.599235][ T72] [ 169.600929][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 169.600929][ T72] neigh_parms_alloc+0x1e5/0x510 [ 169.600929][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 169.600929][ T72] ipv6_find_idev+0x102/0x170 [ 169.600929][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 169.600929][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.600929][ T72] netlink_rcv_skb+0x130/0x360 [ 169.600929][ T72] netlink_unicast+0x449/0x710 [ 169.600929][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.600929][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.600929][ T72] ___sys_sendmsg+0xee/0x170 [ 169.600929][ T72] __sys_sendmsg+0xcd/0x170 [ 169.600929][ T72] do_syscall_64+0xc6/0x1e0 [ 169.600929][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.600929][ T72] [ 169.602766][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 169.603065][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 169.603065][ T72] netdev_get_by_index+0x5e/0x80 [ 169.603065][ T72] fib6_nh_init+0x3d8/0x15b0 [ 169.603065][ T72] ip6_route_info_create+0xf18/0x17d0 [ 169.603065][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 169.603065][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 169.603065][ T72] addrconf_join_anycast+0x1c0/0x220 [ 169.603065][ T72] dev_forward_change+0x2a6/0x7b0 [ 169.603065][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 169.603065][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 169.603065][ T72] proc_sys_call_handler+0x403/0x5e0 [ 169.603065][ T72] vfs_write+0x9e5/0x10a0 [ 169.603065][ T72] ksys_write+0xf5/0x1e0 [ 169.603065][ T72] do_syscall_64+0xc6/0x1e0 [ 169.603065][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.603065][ T72] [ 169.605067][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 169.605067][ T72] netdev_get_by_index+0x5e/0x80 [ 169.605067][ T72] fib6_nh_init+0x3d8/0x15b0 [ 169.605067][ T72] ip6_route_info_create+0xf18/0x17d0 [ 169.605067][ T72] addrconf_f6i_alloc+0x244/0x410 [ 169.605067][ T72] ipv6_add_addr+0x411/0x2000 [ 169.605067][ T72] inet6_addr_add+0x30e/0xa40 [ 169.605067][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 169.605067][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.605067][ T72] netlink_rcv_skb+0x130/0x360 [ 169.605067][ T72] netlink_unicast+0x449/0x710 [ 169.605067][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.605067][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.605067][ T72] ___sys_sendmsg+0xee/0x170 [ 169.605067][ T72] __sys_sendmsg+0xcd/0x170 [ 169.605067][ T72] do_syscall_64+0xc6/0x1e0 [ 169.605067][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.605067][ T72] [ 169.607252][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 169.607252][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 169.607252][ T72] ipv6_find_idev+0x102/0x170 [ 169.607252][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 169.607252][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.607252][ T72] netlink_rcv_skb+0x130/0x360 [ 169.607252][ T72] netlink_unicast+0x449/0x710 [ 169.607252][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.607252][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.607252][ T72] ___sys_sendmsg+0xee/0x170 [ 169.607252][ T72] __sys_sendmsg+0xcd/0x170 [ 169.607252][ T72] do_syscall_64+0xc6/0x1e0 [ 169.607252][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.607252][ T72] [ 169.608947][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 169.608947][ T72] neigh_parms_alloc+0x1e5/0x510 [ 169.608947][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 169.608947][ T72] ipv6_find_idev+0x102/0x170 [ 169.608947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 169.608947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 169.608947][ T72] netlink_rcv_skb+0x130/0x360 [ 169.608947][ T72] netlink_unicast+0x449/0x710 [ 169.608947][ T72] netlink_sendmsg+0x723/0xbe0 [ 169.608947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 169.608947][ T72] ___sys_sendmsg+0xee/0x170 [ 169.608947][ T72] __sys_sendmsg+0xcd/0x170 [ 169.608947][ T72] do_syscall_64+0xc6/0x1e0 [ 169.608947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.608947][ T72] [ 169.610817][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 169.611089][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 169.611089][ T72] dst_init+0x84/0x4a0 [ 169.611089][ T72] dst_alloc+0x97/0x150 [ 169.611089][ T72] ip6_dst_alloc+0x23/0x90 [ 169.611089][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 169.611089][ T72] ip6_pol_route+0x56f/0x840 [ 169.611089][ T72] fib6_rule_lookup+0x227/0x600 [ 169.611089][ T72] ip6_route_output_flags+0x251/0x460 [ 169.611089][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 169.611089][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 169.611089][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 169.611089][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 169.611089][ T72] ip6_datagram_connect+0x2c/0x50 [ 169.611089][ T72] __sys_connect+0x217/0x2a0 [ 169.611089][ T72] __x64_sys_connect+0x72/0xb0 [ 169.611089][ T72] do_syscall_64+0xc6/0x1e0 [ 169.611089][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 169.611089][ T72] [ 179.749276][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 179.749650][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 179.749650][ T72] netdev_get_by_index+0x5e/0x80 [ 179.749650][ T72] fib6_nh_init+0x3d8/0x15b0 [ 179.749650][ T72] ip6_route_info_create+0xf18/0x17d0 [ 179.749650][ T72] addrconf_f6i_alloc+0x244/0x410 [ 179.749650][ T72] ipv6_add_addr+0x411/0x2000 [ 179.749650][ T72] inet6_addr_add+0x30e/0xa40 [ 179.749650][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 179.749650][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.749650][ T72] netlink_rcv_skb+0x130/0x360 [ 179.749650][ T72] netlink_unicast+0x449/0x710 [ 179.749650][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.749650][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.749650][ T72] ___sys_sendmsg+0xee/0x170 [ 179.749650][ T72] __sys_sendmsg+0xcd/0x170 [ 179.749650][ T72] do_syscall_64+0xc6/0x1e0 [ 179.749650][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.749650][ T72] [ 179.752092][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 179.752092][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 179.752092][ T72] ipv6_find_idev+0x102/0x170 [ 179.752092][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 179.752092][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.752092][ T72] netlink_rcv_skb+0x130/0x360 [ 179.752092][ T72] netlink_unicast+0x449/0x710 [ 179.752092][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.752092][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.752092][ T72] ___sys_sendmsg+0xee/0x170 [ 179.752092][ T72] __sys_sendmsg+0xcd/0x170 [ 179.752092][ T72] do_syscall_64+0xc6/0x1e0 [ 179.752092][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.752092][ T72] [ 179.753962][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 179.753962][ T72] neigh_parms_alloc+0x1e5/0x510 [ 179.753962][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 179.753962][ T72] ipv6_find_idev+0x102/0x170 [ 179.753962][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 179.753962][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.753962][ T72] netlink_rcv_skb+0x130/0x360 [ 179.753962][ T72] netlink_unicast+0x449/0x710 [ 179.753962][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.753962][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.753962][ T72] ___sys_sendmsg+0xee/0x170 [ 179.753962][ T72] __sys_sendmsg+0xcd/0x170 [ 179.753962][ T72] do_syscall_64+0xc6/0x1e0 [ 179.753962][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.753962][ T72] [ 179.755996][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 179.756310][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 179.756310][ T72] netdev_get_by_index+0x5e/0x80 [ 179.756310][ T72] fib6_nh_init+0x3d8/0x15b0 [ 179.756310][ T72] ip6_route_info_create+0xf18/0x17d0 [ 179.756310][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 179.756310][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 179.756310][ T72] addrconf_join_anycast+0x1c0/0x220 [ 179.756310][ T72] dev_forward_change+0x2a6/0x7b0 [ 179.756310][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 179.756310][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 179.756310][ T72] proc_sys_call_handler+0x403/0x5e0 [ 179.756310][ T72] vfs_write+0x9e5/0x10a0 [ 179.756310][ T72] ksys_write+0xf5/0x1e0 [ 179.756310][ T72] do_syscall_64+0xc6/0x1e0 [ 179.756310][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.756310][ T72] [ 179.758564][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 179.758564][ T72] netdev_get_by_index+0x5e/0x80 [ 179.758564][ T72] fib6_nh_init+0x3d8/0x15b0 [ 179.758564][ T72] ip6_route_info_create+0xf18/0x17d0 [ 179.758564][ T72] addrconf_f6i_alloc+0x244/0x410 [ 179.758564][ T72] ipv6_add_addr+0x411/0x2000 [ 179.758564][ T72] inet6_addr_add+0x30e/0xa40 [ 179.758564][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 179.758564][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.758564][ T72] netlink_rcv_skb+0x130/0x360 [ 179.758564][ T72] netlink_unicast+0x449/0x710 [ 179.758564][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.758564][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.758564][ T72] ___sys_sendmsg+0xee/0x170 [ 179.758564][ T72] __sys_sendmsg+0xcd/0x170 [ 179.758564][ T72] do_syscall_64+0xc6/0x1e0 [ 179.758564][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.758564][ T72] [ 179.761044][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 179.761044][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 179.761044][ T72] ipv6_find_idev+0x102/0x170 [ 179.761044][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 179.761044][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.761044][ T72] netlink_rcv_skb+0x130/0x360 [ 179.761044][ T72] netlink_unicast+0x449/0x710 [ 179.761044][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.761044][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.761044][ T72] ___sys_sendmsg+0xee/0x170 [ 179.761044][ T72] __sys_sendmsg+0xcd/0x170 [ 179.761044][ T72] do_syscall_64+0xc6/0x1e0 [ 179.761044][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.761044][ T72] [ 179.762947][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 179.762947][ T72] neigh_parms_alloc+0x1e5/0x510 [ 179.762947][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 179.762947][ T72] ipv6_find_idev+0x102/0x170 [ 179.762947][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 179.762947][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 179.762947][ T72] netlink_rcv_skb+0x130/0x360 [ 179.762947][ T72] netlink_unicast+0x449/0x710 [ 179.762947][ T72] netlink_sendmsg+0x723/0xbe0 [ 179.762947][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 179.762947][ T72] ___sys_sendmsg+0xee/0x170 [ 179.762947][ T72] __sys_sendmsg+0xcd/0x170 [ 179.762947][ T72] do_syscall_64+0xc6/0x1e0 [ 179.762947][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.762947][ T72] [ 179.765069][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 179.765421][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 179.765421][ T72] dst_init+0x84/0x4a0 [ 179.765421][ T72] dst_alloc+0x97/0x150 [ 179.765421][ T72] ip6_dst_alloc+0x23/0x90 [ 179.765421][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 179.765421][ T72] ip6_pol_route+0x56f/0x840 [ 179.765421][ T72] fib6_rule_lookup+0x227/0x600 [ 179.765421][ T72] ip6_route_output_flags+0x251/0x460 [ 179.765421][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 179.765421][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 179.765421][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 179.765421][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 179.765421][ T72] ip6_datagram_connect+0x2c/0x50 [ 179.765421][ T72] __sys_connect+0x217/0x2a0 [ 179.765421][ T72] __x64_sys_connect+0x72/0xb0 [ 179.765421][ T72] do_syscall_64+0xc6/0x1e0 [ 179.765421][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 179.765421][ T72] [ 189.916708][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 189.917070][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 189.917070][ T72] netdev_get_by_index+0x5e/0x80 [ 189.917070][ T72] fib6_nh_init+0x3d8/0x15b0 [ 189.917070][ T72] ip6_route_info_create+0xf18/0x17d0 [ 189.917070][ T72] addrconf_f6i_alloc+0x244/0x410 [ 189.917070][ T72] ipv6_add_addr+0x411/0x2000 [ 189.917070][ T72] inet6_addr_add+0x30e/0xa40 [ 189.917070][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 189.917070][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.917070][ T72] netlink_rcv_skb+0x130/0x360 [ 189.917070][ T72] netlink_unicast+0x449/0x710 [ 189.917070][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.917070][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.917070][ T72] ___sys_sendmsg+0xee/0x170 [ 189.917070][ T72] __sys_sendmsg+0xcd/0x170 [ 189.917070][ T72] do_syscall_64+0xc6/0x1e0 [ 189.917070][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.917070][ T72] [ 189.919332][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 189.919332][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 189.919332][ T72] ipv6_find_idev+0x102/0x170 [ 189.919332][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 189.919332][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.919332][ T72] netlink_rcv_skb+0x130/0x360 [ 189.919332][ T72] netlink_unicast+0x449/0x710 [ 189.919332][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.919332][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.919332][ T72] ___sys_sendmsg+0xee/0x170 [ 189.919332][ T72] __sys_sendmsg+0xcd/0x170 [ 189.919332][ T72] do_syscall_64+0xc6/0x1e0 [ 189.919332][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.919332][ T72] [ 189.921073][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 189.921073][ T72] neigh_parms_alloc+0x1e5/0x510 [ 189.921073][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 189.921073][ T72] ipv6_find_idev+0x102/0x170 [ 189.921073][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 189.921073][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.921073][ T72] netlink_rcv_skb+0x130/0x360 [ 189.921073][ T72] netlink_unicast+0x449/0x710 [ 189.921073][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.921073][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.921073][ T72] ___sys_sendmsg+0xee/0x170 [ 189.921073][ T72] __sys_sendmsg+0xcd/0x170 [ 189.921073][ T72] do_syscall_64+0xc6/0x1e0 [ 189.921073][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.921073][ T72] [ 189.922961][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 189.923254][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 189.923254][ T72] netdev_get_by_index+0x5e/0x80 [ 189.923254][ T72] fib6_nh_init+0x3d8/0x15b0 [ 189.923254][ T72] ip6_route_info_create+0xf18/0x17d0 [ 189.923254][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 189.923254][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 189.923254][ T72] addrconf_join_anycast+0x1c0/0x220 [ 189.923254][ T72] dev_forward_change+0x2a6/0x7b0 [ 189.923254][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 189.923254][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 189.923254][ T72] proc_sys_call_handler+0x403/0x5e0 [ 189.923254][ T72] vfs_write+0x9e5/0x10a0 [ 189.923254][ T72] ksys_write+0xf5/0x1e0 [ 189.923254][ T72] do_syscall_64+0xc6/0x1e0 [ 189.923254][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.923254][ T72] [ 189.925347][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 189.925347][ T72] netdev_get_by_index+0x5e/0x80 [ 189.925347][ T72] fib6_nh_init+0x3d8/0x15b0 [ 189.925347][ T72] ip6_route_info_create+0xf18/0x17d0 [ 189.925347][ T72] addrconf_f6i_alloc+0x244/0x410 [ 189.925347][ T72] ipv6_add_addr+0x411/0x2000 [ 189.925347][ T72] inet6_addr_add+0x30e/0xa40 [ 189.925347][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 189.925347][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.925347][ T72] netlink_rcv_skb+0x130/0x360 [ 189.925347][ T72] netlink_unicast+0x449/0x710 [ 189.925347][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.925347][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.925347][ T72] ___sys_sendmsg+0xee/0x170 [ 189.925347][ T72] __sys_sendmsg+0xcd/0x170 [ 189.925347][ T72] do_syscall_64+0xc6/0x1e0 [ 189.925347][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.925347][ T72] [ 189.927585][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 189.927585][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 189.927585][ T72] ipv6_find_idev+0x102/0x170 [ 189.927585][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 189.927585][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.927585][ T72] netlink_rcv_skb+0x130/0x360 [ 189.927585][ T72] netlink_unicast+0x449/0x710 [ 189.927585][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.927585][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.927585][ T72] ___sys_sendmsg+0xee/0x170 [ 189.927585][ T72] __sys_sendmsg+0xcd/0x170 [ 189.927585][ T72] do_syscall_64+0xc6/0x1e0 [ 189.927585][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.927585][ T72] [ 189.929325][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 189.929325][ T72] neigh_parms_alloc+0x1e5/0x510 [ 189.929325][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 189.929325][ T72] ipv6_find_idev+0x102/0x170 [ 189.929325][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 189.929325][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 189.929325][ T72] netlink_rcv_skb+0x130/0x360 [ 189.929325][ T72] netlink_unicast+0x449/0x710 [ 189.929325][ T72] netlink_sendmsg+0x723/0xbe0 [ 189.929325][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 189.929325][ T72] ___sys_sendmsg+0xee/0x170 [ 189.929325][ T72] __sys_sendmsg+0xcd/0x170 [ 189.929325][ T72] do_syscall_64+0xc6/0x1e0 [ 189.929325][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.929325][ T72] [ 189.931202][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 189.931474][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 189.931474][ T72] dst_init+0x84/0x4a0 [ 189.931474][ T72] dst_alloc+0x97/0x150 [ 189.931474][ T72] ip6_dst_alloc+0x23/0x90 [ 189.931474][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 189.931474][ T72] ip6_pol_route+0x56f/0x840 [ 189.931474][ T72] fib6_rule_lookup+0x227/0x600 [ 189.931474][ T72] ip6_route_output_flags+0x251/0x460 [ 189.931474][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 189.931474][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 189.931474][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 189.931474][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 189.931474][ T72] ip6_datagram_connect+0x2c/0x50 [ 189.931474][ T72] __sys_connect+0x217/0x2a0 [ 189.931474][ T72] __x64_sys_connect+0x72/0xb0 [ 189.931474][ T72] do_syscall_64+0xc6/0x1e0 [ 189.931474][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 189.931474][ T72] [ 200.076627][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 200.077077][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 200.077077][ T72] netdev_get_by_index+0x5e/0x80 [ 200.077077][ T72] fib6_nh_init+0x3d8/0x15b0 [ 200.077077][ T72] ip6_route_info_create+0xf18/0x17d0 [ 200.077077][ T72] addrconf_f6i_alloc+0x244/0x410 [ 200.077077][ T72] ipv6_add_addr+0x411/0x2000 [ 200.077077][ T72] inet6_addr_add+0x30e/0xa40 [ 200.077077][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 200.077077][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.077077][ T72] netlink_rcv_skb+0x130/0x360 [ 200.077077][ T72] netlink_unicast+0x449/0x710 [ 200.077077][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.077077][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.077077][ T72] ___sys_sendmsg+0xee/0x170 [ 200.077077][ T72] __sys_sendmsg+0xcd/0x170 [ 200.077077][ T72] do_syscall_64+0xc6/0x1e0 [ 200.077077][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.077077][ T72] [ 200.079422][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 200.079422][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 200.079422][ T72] ipv6_find_idev+0x102/0x170 [ 200.079422][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 200.079422][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.079422][ T72] netlink_rcv_skb+0x130/0x360 [ 200.079422][ T72] netlink_unicast+0x449/0x710 [ 200.079422][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.079422][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.079422][ T72] ___sys_sendmsg+0xee/0x170 [ 200.079422][ T72] __sys_sendmsg+0xcd/0x170 [ 200.079422][ T72] do_syscall_64+0xc6/0x1e0 [ 200.079422][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.079422][ T72] [ 200.081213][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 200.081213][ T72] neigh_parms_alloc+0x1e5/0x510 [ 200.081213][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 200.081213][ T72] ipv6_find_idev+0x102/0x170 [ 200.081213][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 200.081213][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.081213][ T72] netlink_rcv_skb+0x130/0x360 [ 200.081213][ T72] netlink_unicast+0x449/0x710 [ 200.081213][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.081213][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.081213][ T72] ___sys_sendmsg+0xee/0x170 [ 200.081213][ T72] __sys_sendmsg+0xcd/0x170 [ 200.081213][ T72] do_syscall_64+0xc6/0x1e0 [ 200.081213][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.081213][ T72] [ 200.083192][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 200.083506][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 200.083506][ T72] netdev_get_by_index+0x5e/0x80 [ 200.083506][ T72] fib6_nh_init+0x3d8/0x15b0 [ 200.083506][ T72] ip6_route_info_create+0xf18/0x17d0 [ 200.083506][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 200.083506][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 200.083506][ T72] addrconf_join_anycast+0x1c0/0x220 [ 200.083506][ T72] dev_forward_change+0x2a6/0x7b0 [ 200.083506][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 200.083506][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 200.083506][ T72] proc_sys_call_handler+0x403/0x5e0 [ 200.083506][ T72] vfs_write+0x9e5/0x10a0 [ 200.083506][ T72] ksys_write+0xf5/0x1e0 [ 200.083506][ T72] do_syscall_64+0xc6/0x1e0 [ 200.083506][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.083506][ T72] [ 200.085654][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 200.085654][ T72] netdev_get_by_index+0x5e/0x80 [ 200.085654][ T72] fib6_nh_init+0x3d8/0x15b0 [ 200.085654][ T72] ip6_route_info_create+0xf18/0x17d0 [ 200.085654][ T72] addrconf_f6i_alloc+0x244/0x410 [ 200.085654][ T72] ipv6_add_addr+0x411/0x2000 [ 200.085654][ T72] inet6_addr_add+0x30e/0xa40 [ 200.085654][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 200.085654][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.085654][ T72] netlink_rcv_skb+0x130/0x360 [ 200.085654][ T72] netlink_unicast+0x449/0x710 [ 200.085654][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.085654][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.085654][ T72] ___sys_sendmsg+0xee/0x170 [ 200.085654][ T72] __sys_sendmsg+0xcd/0x170 [ 200.085654][ T72] do_syscall_64+0xc6/0x1e0 [ 200.085654][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.085654][ T72] [ 200.087984][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 200.087984][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 200.087984][ T72] ipv6_find_idev+0x102/0x170 [ 200.087984][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 200.087984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.087984][ T72] netlink_rcv_skb+0x130/0x360 [ 200.087984][ T72] netlink_unicast+0x449/0x710 [ 200.087984][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.087984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.087984][ T72] ___sys_sendmsg+0xee/0x170 [ 200.087984][ T72] __sys_sendmsg+0xcd/0x170 [ 200.087984][ T72] do_syscall_64+0xc6/0x1e0 [ 200.087984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.087984][ T72] [ 200.089798][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 200.089798][ T72] neigh_parms_alloc+0x1e5/0x510 [ 200.089798][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 200.089798][ T72] ipv6_find_idev+0x102/0x170 [ 200.089798][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 200.089798][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 200.089798][ T72] netlink_rcv_skb+0x130/0x360 [ 200.089798][ T72] netlink_unicast+0x449/0x710 [ 200.089798][ T72] netlink_sendmsg+0x723/0xbe0 [ 200.089798][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 200.089798][ T72] ___sys_sendmsg+0xee/0x170 [ 200.089798][ T72] __sys_sendmsg+0xcd/0x170 [ 200.089798][ T72] do_syscall_64+0xc6/0x1e0 [ 200.089798][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.089798][ T72] [ 200.091731][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 200.092017][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 200.092017][ T72] dst_init+0x84/0x4a0 [ 200.092017][ T72] dst_alloc+0x97/0x150 [ 200.092017][ T72] ip6_dst_alloc+0x23/0x90 [ 200.092017][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 200.092017][ T72] ip6_pol_route+0x56f/0x840 [ 200.092017][ T72] fib6_rule_lookup+0x227/0x600 [ 200.092017][ T72] ip6_route_output_flags+0x251/0x460 [ 200.092017][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 200.092017][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 200.092017][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 200.092017][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 200.092017][ T72] ip6_datagram_connect+0x2c/0x50 [ 200.092017][ T72] __sys_connect+0x217/0x2a0 [ 200.092017][ T72] __x64_sys_connect+0x72/0xb0 [ 200.092017][ T72] do_syscall_64+0xc6/0x1e0 [ 200.092017][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 200.092017][ T72] [ 210.228611][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 210.228991][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 210.228991][ T72] netdev_get_by_index+0x5e/0x80 [ 210.228991][ T72] fib6_nh_init+0x3d8/0x15b0 [ 210.228991][ T72] ip6_route_info_create+0xf18/0x17d0 [ 210.228991][ T72] addrconf_f6i_alloc+0x244/0x410 [ 210.228991][ T72] ipv6_add_addr+0x411/0x2000 [ 210.228991][ T72] inet6_addr_add+0x30e/0xa40 [ 210.228991][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 210.228991][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.228991][ T72] netlink_rcv_skb+0x130/0x360 [ 210.228991][ T72] netlink_unicast+0x449/0x710 [ 210.228991][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.228991][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.228991][ T72] ___sys_sendmsg+0xee/0x170 [ 210.228991][ T72] __sys_sendmsg+0xcd/0x170 [ 210.228991][ T72] do_syscall_64+0xc6/0x1e0 [ 210.228991][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.228991][ T72] [ 210.231297][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 210.231297][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 210.231297][ T72] ipv6_find_idev+0x102/0x170 [ 210.231297][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 210.231297][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.231297][ T72] netlink_rcv_skb+0x130/0x360 [ 210.231297][ T72] netlink_unicast+0x449/0x710 [ 210.231297][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.231297][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.231297][ T72] ___sys_sendmsg+0xee/0x170 [ 210.231297][ T72] __sys_sendmsg+0xcd/0x170 [ 210.231297][ T72] do_syscall_64+0xc6/0x1e0 [ 210.231297][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.231297][ T72] [ 210.233042][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 210.233042][ T72] neigh_parms_alloc+0x1e5/0x510 [ 210.233042][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 210.233042][ T72] ipv6_find_idev+0x102/0x170 [ 210.233042][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 210.233042][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.233042][ T72] netlink_rcv_skb+0x130/0x360 [ 210.233042][ T72] netlink_unicast+0x449/0x710 [ 210.233042][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.233042][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.233042][ T72] ___sys_sendmsg+0xee/0x170 [ 210.233042][ T72] __sys_sendmsg+0xcd/0x170 [ 210.233042][ T72] do_syscall_64+0xc6/0x1e0 [ 210.233042][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.233042][ T72] [ 210.235127][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 210.235437][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 210.235437][ T72] netdev_get_by_index+0x5e/0x80 [ 210.235437][ T72] fib6_nh_init+0x3d8/0x15b0 [ 210.235437][ T72] ip6_route_info_create+0xf18/0x17d0 [ 210.235437][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 210.235437][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 210.235437][ T72] addrconf_join_anycast+0x1c0/0x220 [ 210.235437][ T72] dev_forward_change+0x2a6/0x7b0 [ 210.235437][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 210.235437][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 210.235437][ T72] proc_sys_call_handler+0x403/0x5e0 [ 210.235437][ T72] vfs_write+0x9e5/0x10a0 [ 210.235437][ T72] ksys_write+0xf5/0x1e0 [ 210.235437][ T72] do_syscall_64+0xc6/0x1e0 [ 210.235437][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.235437][ T72] [ 210.237711][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 210.237711][ T72] netdev_get_by_index+0x5e/0x80 [ 210.237711][ T72] fib6_nh_init+0x3d8/0x15b0 [ 210.237711][ T72] ip6_route_info_create+0xf18/0x17d0 [ 210.237711][ T72] addrconf_f6i_alloc+0x244/0x410 [ 210.237711][ T72] ipv6_add_addr+0x411/0x2000 [ 210.237711][ T72] inet6_addr_add+0x30e/0xa40 [ 210.237711][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 210.237711][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.237711][ T72] netlink_rcv_skb+0x130/0x360 [ 210.237711][ T72] netlink_unicast+0x449/0x710 [ 210.237711][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.237711][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.237711][ T72] ___sys_sendmsg+0xee/0x170 [ 210.237711][ T72] __sys_sendmsg+0xcd/0x170 [ 210.237711][ T72] do_syscall_64+0xc6/0x1e0 [ 210.237711][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.237711][ T72] [ 210.240103][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 210.240103][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 210.240103][ T72] ipv6_find_idev+0x102/0x170 [ 210.240103][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 210.240103][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.240103][ T72] netlink_rcv_skb+0x130/0x360 [ 210.240103][ T72] netlink_unicast+0x449/0x710 [ 210.240103][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.240103][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.240103][ T72] ___sys_sendmsg+0xee/0x170 [ 210.240103][ T72] __sys_sendmsg+0xcd/0x170 [ 210.240103][ T72] do_syscall_64+0xc6/0x1e0 [ 210.240103][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.240103][ T72] [ 210.242072][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 210.242072][ T72] neigh_parms_alloc+0x1e5/0x510 [ 210.242072][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 210.242072][ T72] ipv6_find_idev+0x102/0x170 [ 210.242072][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 210.242072][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 210.242072][ T72] netlink_rcv_skb+0x130/0x360 [ 210.242072][ T72] netlink_unicast+0x449/0x710 [ 210.242072][ T72] netlink_sendmsg+0x723/0xbe0 [ 210.242072][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 210.242072][ T72] ___sys_sendmsg+0xee/0x170 [ 210.242072][ T72] __sys_sendmsg+0xcd/0x170 [ 210.242072][ T72] do_syscall_64+0xc6/0x1e0 [ 210.242072][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.242072][ T72] [ 210.244174][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 210.244458][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 210.244458][ T72] dst_init+0x84/0x4a0 [ 210.244458][ T72] dst_alloc+0x97/0x150 [ 210.244458][ T72] ip6_dst_alloc+0x23/0x90 [ 210.244458][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 210.244458][ T72] ip6_pol_route+0x56f/0x840 [ 210.244458][ T72] fib6_rule_lookup+0x227/0x600 [ 210.244458][ T72] ip6_route_output_flags+0x251/0x460 [ 210.244458][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 210.244458][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 210.244458][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 210.244458][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 210.244458][ T72] ip6_datagram_connect+0x2c/0x50 [ 210.244458][ T72] __sys_connect+0x217/0x2a0 [ 210.244458][ T72] __x64_sys_connect+0x72/0xb0 [ 210.244458][ T72] do_syscall_64+0xc6/0x1e0 [ 210.244458][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 210.244458][ T72] [ 220.365635][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 220.365984][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 220.365984][ T72] netdev_get_by_index+0x5e/0x80 [ 220.365984][ T72] fib6_nh_init+0x3d8/0x15b0 [ 220.365984][ T72] ip6_route_info_create+0xf18/0x17d0 [ 220.365984][ T72] addrconf_f6i_alloc+0x244/0x410 [ 220.365984][ T72] ipv6_add_addr+0x411/0x2000 [ 220.365984][ T72] inet6_addr_add+0x30e/0xa40 [ 220.365984][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 220.365984][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.365984][ T72] netlink_rcv_skb+0x130/0x360 [ 220.365984][ T72] netlink_unicast+0x449/0x710 [ 220.365984][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.365984][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.365984][ T72] ___sys_sendmsg+0xee/0x170 [ 220.365984][ T72] __sys_sendmsg+0xcd/0x170 [ 220.365984][ T72] do_syscall_64+0xc6/0x1e0 [ 220.365984][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.365984][ T72] [ 220.368214][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 220.368214][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 220.368214][ T72] ipv6_find_idev+0x102/0x170 [ 220.368214][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 220.368214][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.368214][ T72] netlink_rcv_skb+0x130/0x360 [ 220.368214][ T72] netlink_unicast+0x449/0x710 [ 220.368214][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.368214][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.368214][ T72] ___sys_sendmsg+0xee/0x170 [ 220.368214][ T72] __sys_sendmsg+0xcd/0x170 [ 220.368214][ T72] do_syscall_64+0xc6/0x1e0 [ 220.368214][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.368214][ T72] [ 220.369958][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 220.369958][ T72] neigh_parms_alloc+0x1e5/0x510 [ 220.369958][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 220.369958][ T72] ipv6_find_idev+0x102/0x170 [ 220.369958][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 220.369958][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.369958][ T72] netlink_rcv_skb+0x130/0x360 [ 220.369958][ T72] netlink_unicast+0x449/0x710 [ 220.369958][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.369958][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.369958][ T72] ___sys_sendmsg+0xee/0x170 [ 220.369958][ T72] __sys_sendmsg+0xcd/0x170 [ 220.369958][ T72] do_syscall_64+0xc6/0x1e0 [ 220.369958][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.369958][ T72] [ 220.372364][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 220.372719][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 220.372719][ T72] netdev_get_by_index+0x5e/0x80 [ 220.372719][ T72] fib6_nh_init+0x3d8/0x15b0 [ 220.372719][ T72] ip6_route_info_create+0xf18/0x17d0 [ 220.372719][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 220.372719][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 220.372719][ T72] addrconf_join_anycast+0x1c0/0x220 [ 220.372719][ T72] dev_forward_change+0x2a6/0x7b0 [ 220.372719][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 220.372719][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 220.372719][ T72] proc_sys_call_handler+0x403/0x5e0 [ 220.372719][ T72] vfs_write+0x9e5/0x10a0 [ 220.372719][ T72] ksys_write+0xf5/0x1e0 [ 220.372719][ T72] do_syscall_64+0xc6/0x1e0 [ 220.372719][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.372719][ T72] [ 220.374784][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 220.374784][ T72] netdev_get_by_index+0x5e/0x80 [ 220.374784][ T72] fib6_nh_init+0x3d8/0x15b0 [ 220.374784][ T72] ip6_route_info_create+0xf18/0x17d0 [ 220.374784][ T72] addrconf_f6i_alloc+0x244/0x410 [ 220.374784][ T72] ipv6_add_addr+0x411/0x2000 [ 220.374784][ T72] inet6_addr_add+0x30e/0xa40 [ 220.374784][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 220.374784][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.374784][ T72] netlink_rcv_skb+0x130/0x360 [ 220.374784][ T72] netlink_unicast+0x449/0x710 [ 220.374784][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.374784][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.374784][ T72] ___sys_sendmsg+0xee/0x170 [ 220.374784][ T72] __sys_sendmsg+0xcd/0x170 [ 220.374784][ T72] do_syscall_64+0xc6/0x1e0 [ 220.374784][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.374784][ T72] [ 220.377019][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 220.377019][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 220.377019][ T72] ipv6_find_idev+0x102/0x170 [ 220.377019][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 220.377019][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.377019][ T72] netlink_rcv_skb+0x130/0x360 [ 220.377019][ T72] netlink_unicast+0x449/0x710 [ 220.377019][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.377019][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.377019][ T72] ___sys_sendmsg+0xee/0x170 [ 220.377019][ T72] __sys_sendmsg+0xcd/0x170 [ 220.377019][ T72] do_syscall_64+0xc6/0x1e0 [ 220.377019][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.377019][ T72] [ 220.378761][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 220.378761][ T72] neigh_parms_alloc+0x1e5/0x510 [ 220.378761][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 220.378761][ T72] ipv6_find_idev+0x102/0x170 [ 220.378761][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 220.378761][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 220.378761][ T72] netlink_rcv_skb+0x130/0x360 [ 220.378761][ T72] netlink_unicast+0x449/0x710 [ 220.378761][ T72] netlink_sendmsg+0x723/0xbe0 [ 220.378761][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 220.378761][ T72] ___sys_sendmsg+0xee/0x170 [ 220.378761][ T72] __sys_sendmsg+0xcd/0x170 [ 220.378761][ T72] do_syscall_64+0xc6/0x1e0 [ 220.378761][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.378761][ T72] [ 220.380673][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 220.380998][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 220.380998][ T72] dst_init+0x84/0x4a0 [ 220.380998][ T72] dst_alloc+0x97/0x150 [ 220.380998][ T72] ip6_dst_alloc+0x23/0x90 [ 220.380998][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 220.380998][ T72] ip6_pol_route+0x56f/0x840 [ 220.380998][ T72] fib6_rule_lookup+0x227/0x600 [ 220.380998][ T72] ip6_route_output_flags+0x251/0x460 [ 220.380998][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 220.380998][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 220.380998][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 220.380998][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 220.380998][ T72] ip6_datagram_connect+0x2c/0x50 [ 220.380998][ T72] __sys_connect+0x217/0x2a0 [ 220.380998][ T72] __x64_sys_connect+0x72/0xb0 [ 220.380998][ T72] do_syscall_64+0xc6/0x1e0 [ 220.380998][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 220.380998][ T72] [ 230.461652][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 230.462013][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 230.462013][ T72] netdev_get_by_index+0x5e/0x80 [ 230.462013][ T72] fib6_nh_init+0x3d8/0x15b0 [ 230.462013][ T72] ip6_route_info_create+0xf18/0x17d0 [ 230.462013][ T72] addrconf_f6i_alloc+0x244/0x410 [ 230.462013][ T72] ipv6_add_addr+0x411/0x2000 [ 230.462013][ T72] inet6_addr_add+0x30e/0xa40 [ 230.462013][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 230.462013][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.462013][ T72] netlink_rcv_skb+0x130/0x360 [ 230.462013][ T72] netlink_unicast+0x449/0x710 [ 230.462013][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.462013][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.462013][ T72] ___sys_sendmsg+0xee/0x170 [ 230.462013][ T72] __sys_sendmsg+0xcd/0x170 [ 230.462013][ T72] do_syscall_64+0xc6/0x1e0 [ 230.462013][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.462013][ T72] [ 230.464260][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 230.464260][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 230.464260][ T72] ipv6_find_idev+0x102/0x170 [ 230.464260][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 230.464260][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.464260][ T72] netlink_rcv_skb+0x130/0x360 [ 230.464260][ T72] netlink_unicast+0x449/0x710 [ 230.464260][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.464260][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.464260][ T72] ___sys_sendmsg+0xee/0x170 [ 230.464260][ T72] __sys_sendmsg+0xcd/0x170 [ 230.464260][ T72] do_syscall_64+0xc6/0x1e0 [ 230.464260][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.464260][ T72] [ 230.465973][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 230.465973][ T72] neigh_parms_alloc+0x1e5/0x510 [ 230.465973][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 230.465973][ T72] ipv6_find_idev+0x102/0x170 [ 230.465973][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 230.465973][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.465973][ T72] netlink_rcv_skb+0x130/0x360 [ 230.465973][ T72] netlink_unicast+0x449/0x710 [ 230.465973][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.465973][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.465973][ T72] ___sys_sendmsg+0xee/0x170 [ 230.465973][ T72] __sys_sendmsg+0xcd/0x170 [ 230.465973][ T72] do_syscall_64+0xc6/0x1e0 [ 230.465973][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.465973][ T72] [ 230.467896][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 230.468273][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 230.468273][ T72] netdev_get_by_index+0x5e/0x80 [ 230.468273][ T72] fib6_nh_init+0x3d8/0x15b0 [ 230.468273][ T72] ip6_route_info_create+0xf18/0x17d0 [ 230.468273][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 230.468273][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 230.468273][ T72] addrconf_join_anycast+0x1c0/0x220 [ 230.468273][ T72] dev_forward_change+0x2a6/0x7b0 [ 230.468273][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 230.468273][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 230.468273][ T72] proc_sys_call_handler+0x403/0x5e0 [ 230.468273][ T72] vfs_write+0x9e5/0x10a0 [ 230.468273][ T72] ksys_write+0xf5/0x1e0 [ 230.468273][ T72] do_syscall_64+0xc6/0x1e0 [ 230.468273][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.468273][ T72] [ 230.470321][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 230.470321][ T72] netdev_get_by_index+0x5e/0x80 [ 230.470321][ T72] fib6_nh_init+0x3d8/0x15b0 [ 230.470321][ T72] ip6_route_info_create+0xf18/0x17d0 [ 230.470321][ T72] addrconf_f6i_alloc+0x244/0x410 [ 230.470321][ T72] ipv6_add_addr+0x411/0x2000 [ 230.470321][ T72] inet6_addr_add+0x30e/0xa40 [ 230.470321][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 230.470321][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.470321][ T72] netlink_rcv_skb+0x130/0x360 [ 230.470321][ T72] netlink_unicast+0x449/0x710 [ 230.470321][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.470321][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.470321][ T72] ___sys_sendmsg+0xee/0x170 [ 230.470321][ T72] __sys_sendmsg+0xcd/0x170 [ 230.470321][ T72] do_syscall_64+0xc6/0x1e0 [ 230.470321][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.470321][ T72] [ 230.472491][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 230.472491][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 230.472491][ T72] ipv6_find_idev+0x102/0x170 [ 230.472491][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 230.472491][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.472491][ T72] netlink_rcv_skb+0x130/0x360 [ 230.472491][ T72] netlink_unicast+0x449/0x710 [ 230.472491][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.472491][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.472491][ T72] ___sys_sendmsg+0xee/0x170 [ 230.472491][ T72] __sys_sendmsg+0xcd/0x170 [ 230.472491][ T72] do_syscall_64+0xc6/0x1e0 [ 230.472491][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.472491][ T72] [ 230.474161][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 230.474161][ T72] neigh_parms_alloc+0x1e5/0x510 [ 230.474161][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 230.474161][ T72] ipv6_find_idev+0x102/0x170 [ 230.474161][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 230.474161][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 230.474161][ T72] netlink_rcv_skb+0x130/0x360 [ 230.474161][ T72] netlink_unicast+0x449/0x710 [ 230.474161][ T72] netlink_sendmsg+0x723/0xbe0 [ 230.474161][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 230.474161][ T72] ___sys_sendmsg+0xee/0x170 [ 230.474161][ T72] __sys_sendmsg+0xcd/0x170 [ 230.474161][ T72] do_syscall_64+0xc6/0x1e0 [ 230.474161][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.474161][ T72] [ 230.476034][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 230.476301][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 230.476301][ T72] dst_init+0x84/0x4a0 [ 230.476301][ T72] dst_alloc+0x97/0x150 [ 230.476301][ T72] ip6_dst_alloc+0x23/0x90 [ 230.476301][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 230.476301][ T72] ip6_pol_route+0x56f/0x840 [ 230.476301][ T72] fib6_rule_lookup+0x227/0x600 [ 230.476301][ T72] ip6_route_output_flags+0x251/0x460 [ 230.476301][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 230.476301][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 230.476301][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 230.476301][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 230.476301][ T72] ip6_datagram_connect+0x2c/0x50 [ 230.476301][ T72] __sys_connect+0x217/0x2a0 [ 230.476301][ T72] __x64_sys_connect+0x72/0xb0 [ 230.476301][ T72] do_syscall_64+0xc6/0x1e0 [ 230.476301][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 230.476301][ T72] [ 240.636717][ T72] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 240.637099][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 240.637099][ T72] netdev_get_by_index+0x5e/0x80 [ 240.637099][ T72] fib6_nh_init+0x3d8/0x15b0 [ 240.637099][ T72] ip6_route_info_create+0xf18/0x17d0 [ 240.637099][ T72] addrconf_f6i_alloc+0x244/0x410 [ 240.637099][ T72] ipv6_add_addr+0x411/0x2000 [ 240.637099][ T72] inet6_addr_add+0x30e/0xa40 [ 240.637099][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 240.637099][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.637099][ T72] netlink_rcv_skb+0x130/0x360 [ 240.637099][ T72] netlink_unicast+0x449/0x710 [ 240.637099][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.637099][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.637099][ T72] ___sys_sendmsg+0xee/0x170 [ 240.637099][ T72] __sys_sendmsg+0xcd/0x170 [ 240.637099][ T72] do_syscall_64+0xc6/0x1e0 [ 240.637099][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.637099][ T72] [ 240.639416][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 240.639416][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 240.639416][ T72] ipv6_find_idev+0x102/0x170 [ 240.639416][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 240.639416][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.639416][ T72] netlink_rcv_skb+0x130/0x360 [ 240.639416][ T72] netlink_unicast+0x449/0x710 [ 240.639416][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.639416][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.639416][ T72] ___sys_sendmsg+0xee/0x170 [ 240.639416][ T72] __sys_sendmsg+0xcd/0x170 [ 240.639416][ T72] do_syscall_64+0xc6/0x1e0 [ 240.639416][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.639416][ T72] [ 240.641204][ T72] ref_tracker: ns1eth2@ffff8880064b15c0 has 1/3 users at [ 240.641204][ T72] neigh_parms_alloc+0x1e5/0x510 [ 240.641204][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 240.641204][ T72] ipv6_find_idev+0x102/0x170 [ 240.641204][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 240.641204][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.641204][ T72] netlink_rcv_skb+0x130/0x360 [ 240.641204][ T72] netlink_unicast+0x449/0x710 [ 240.641204][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.641204][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.641204][ T72] ___sys_sendmsg+0xee/0x170 [ 240.641204][ T72] __sys_sendmsg+0xcd/0x170 [ 240.641204][ T72] do_syscall_64+0xc6/0x1e0 [ 240.641204][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.641204][ T72] [ 240.643129][ T72] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 5 [ 240.643436][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 240.643436][ T72] netdev_get_by_index+0x5e/0x80 [ 240.643436][ T72] fib6_nh_init+0x3d8/0x15b0 [ 240.643436][ T72] ip6_route_info_create+0xf18/0x17d0 [ 240.643436][ T72] addrconf_f6i_alloc+0x19e/0x410 [ 240.643436][ T72] __ipv6_dev_ac_inc+0x25f/0xb10 [ 240.643436][ T72] addrconf_join_anycast+0x1c0/0x220 [ 240.643436][ T72] dev_forward_change+0x2a6/0x7b0 [ 240.643436][ T72] addrconf_fixup_forwarding+0x23f/0x460 [ 240.643436][ T72] addrconf_sysctl_forward+0x212/0x2b0 [ 240.643436][ T72] proc_sys_call_handler+0x403/0x5e0 [ 240.643436][ T72] vfs_write+0x9e5/0x10a0 [ 240.643436][ T72] ksys_write+0xf5/0x1e0 [ 240.643436][ T72] do_syscall_64+0xc6/0x1e0 [ 240.643436][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.643436][ T72] [ 240.645634][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 240.645634][ T72] netdev_get_by_index+0x5e/0x80 [ 240.645634][ T72] fib6_nh_init+0x3d8/0x15b0 [ 240.645634][ T72] ip6_route_info_create+0xf18/0x17d0 [ 240.645634][ T72] addrconf_f6i_alloc+0x244/0x410 [ 240.645634][ T72] ipv6_add_addr+0x411/0x2000 [ 240.645634][ T72] inet6_addr_add+0x30e/0xa40 [ 240.645634][ T72] inet6_rtm_newaddr+0x560/0x6b0 [ 240.645634][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.645634][ T72] netlink_rcv_skb+0x130/0x360 [ 240.645634][ T72] netlink_unicast+0x449/0x710 [ 240.645634][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.645634][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.645634][ T72] ___sys_sendmsg+0xee/0x170 [ 240.645634][ T72] __sys_sendmsg+0xcd/0x170 [ 240.645634][ T72] do_syscall_64+0xc6/0x1e0 [ 240.645634][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.645634][ T72] [ 240.647959][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 240.647959][ T72] ipv6_add_dev+0x3ba/0x11c0 [ 240.647959][ T72] ipv6_find_idev+0x102/0x170 [ 240.647959][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 240.647959][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.647959][ T72] netlink_rcv_skb+0x130/0x360 [ 240.647959][ T72] netlink_unicast+0x449/0x710 [ 240.647959][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.647959][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.647959][ T72] ___sys_sendmsg+0xee/0x170 [ 240.647959][ T72] __sys_sendmsg+0xcd/0x170 [ 240.647959][ T72] do_syscall_64+0xc6/0x1e0 [ 240.647959][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.647959][ T72] [ 240.649786][ T72] ref_tracker: ns2eth1@ffff8880059f15c0 has 1/4 users at [ 240.649786][ T72] neigh_parms_alloc+0x1e5/0x510 [ 240.649786][ T72] ipv6_add_dev+0x2fe/0x11c0 [ 240.649786][ T72] ipv6_find_idev+0x102/0x170 [ 240.649786][ T72] inet6_rtm_newaddr+0x37c/0x6b0 [ 240.649786][ T72] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 240.649786][ T72] netlink_rcv_skb+0x130/0x360 [ 240.649786][ T72] netlink_unicast+0x449/0x710 [ 240.649786][ T72] netlink_sendmsg+0x723/0xbe0 [ 240.649786][ T72] ____sys_sendmsg+0x7b2/0xa10 [ 240.649786][ T72] ___sys_sendmsg+0xee/0x170 [ 240.649786][ T72] __sys_sendmsg+0xcd/0x170 [ 240.649786][ T72] do_syscall_64+0xc6/0x1e0 [ 240.649786][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.649786][ T72] [ 240.651755][ T72] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 240.652060][ T72] ref_tracker: lo@ffff8880068a15c0 has 1/1 users at [ 240.652060][ T72] dst_init+0x84/0x4a0 [ 240.652060][ T72] dst_alloc+0x97/0x150 [ 240.652060][ T72] ip6_dst_alloc+0x23/0x90 [ 240.652060][ T72] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 240.652060][ T72] ip6_pol_route+0x56f/0x840 [ 240.652060][ T72] fib6_rule_lookup+0x227/0x600 [ 240.652060][ T72] ip6_route_output_flags+0x251/0x460 [ 240.652060][ T72] ip6_dst_lookup_tail.constprop.0+0x31c/0xb60 [ 240.652060][ T72] ip6_dst_lookup_flow+0x88/0x190 [ 240.652060][ T72] ip6_datagram_dst_update+0x52d/0xc60 [ 240.652060][ T72] __ip6_datagram_connect+0xa93/0x1050 [ 240.652060][ T72] ip6_datagram_connect+0x2c/0x50 [ 240.652060][ T72] __sys_connect+0x217/0x2a0 [ 240.652060][ T72] __x64_sys_connect+0x72/0xb0 [ 240.652060][ T72] do_syscall_64+0xc6/0x1e0 [ 240.652060][ T72] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 240.652060][ T72]