[ 797.611662][ T10] unregister_netdevice: waiting for ns1eth4 to become free. Usage count = 4 [ 797.612019][ T10] ref_tracker: ns1eth4@ffff888005bd95c0 has 1/3 users at [ 797.612019][ T10] netdev_get_by_index+0x5e/0x80 [ 797.612019][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.612019][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.612019][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.612019][ T10] ipv6_add_addr+0x411/0x2000 [ 797.612019][ T10] inet6_addr_add+0x30e/0xa40 [ 797.612019][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.612019][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.612019][ T10] netlink_rcv_skb+0x130/0x360 [ 797.612019][ T10] netlink_unicast+0x449/0x710 [ 797.612019][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.612019][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.612019][ T10] ___sys_sendmsg+0xee/0x170 [ 797.612019][ T10] __sys_sendmsg+0xcd/0x170 [ 797.612019][ T10] do_syscall_64+0xc6/0x1e0 [ 797.612019][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.612019][ T10] [ 797.614239][ T10] ref_tracker: ns1eth4@ffff888005bd95c0 has 1/3 users at [ 797.614239][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.614239][ T10] ipv6_find_idev+0x102/0x170 [ 797.614239][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.614239][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.614239][ T10] netlink_rcv_skb+0x130/0x360 [ 797.614239][ T10] netlink_unicast+0x449/0x710 [ 797.614239][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.614239][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.614239][ T10] ___sys_sendmsg+0xee/0x170 [ 797.614239][ T10] __sys_sendmsg+0xcd/0x170 [ 797.614239][ T10] do_syscall_64+0xc6/0x1e0 [ 797.614239][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.614239][ T10] [ 797.615944][ T10] ref_tracker: ns1eth4@ffff888005bd95c0 has 1/3 users at [ 797.615944][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.615944][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.615944][ T10] ipv6_find_idev+0x102/0x170 [ 797.615944][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.615944][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.615944][ T10] netlink_rcv_skb+0x130/0x360 [ 797.615944][ T10] netlink_unicast+0x449/0x710 [ 797.615944][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.615944][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.615944][ T10] ___sys_sendmsg+0xee/0x170 [ 797.615944][ T10] __sys_sendmsg+0xcd/0x170 [ 797.615944][ T10] do_syscall_64+0xc6/0x1e0 [ 797.615944][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.615944][ T10] [ 797.617801][ T10] unregister_netdevice: waiting for ns2eth4 to become free. Usage count = 4 [ 797.618092][ T10] ref_tracker: ns2eth4@ffff888007d895c0 has 1/3 users at [ 797.618092][ T10] netdev_get_by_index+0x5e/0x80 [ 797.618092][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.618092][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.618092][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.618092][ T10] ipv6_add_addr+0x411/0x2000 [ 797.618092][ T10] inet6_addr_add+0x30e/0xa40 [ 797.618092][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.618092][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.618092][ T10] netlink_rcv_skb+0x130/0x360 [ 797.618092][ T10] netlink_unicast+0x449/0x710 [ 797.618092][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.618092][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.618092][ T10] ___sys_sendmsg+0xee/0x170 [ 797.618092][ T10] __sys_sendmsg+0xcd/0x170 [ 797.618092][ T10] do_syscall_64+0xc6/0x1e0 [ 797.618092][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.618092][ T10] [ 797.620280][ T10] ref_tracker: ns2eth4@ffff888007d895c0 has 1/3 users at [ 797.620280][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.620280][ T10] ipv6_find_idev+0x102/0x170 [ 797.620280][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.620280][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.620280][ T10] netlink_rcv_skb+0x130/0x360 [ 797.620280][ T10] netlink_unicast+0x449/0x710 [ 797.620280][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.620280][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.620280][ T10] ___sys_sendmsg+0xee/0x170 [ 797.620280][ T10] __sys_sendmsg+0xcd/0x170 [ 797.620280][ T10] do_syscall_64+0xc6/0x1e0 [ 797.620280][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.620280][ T10] [ 797.622075][ T10] ref_tracker: ns2eth4@ffff888007d895c0 has 1/3 users at [ 797.622075][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.622075][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.622075][ T10] ipv6_find_idev+0x102/0x170 [ 797.622075][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.622075][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.622075][ T10] netlink_rcv_skb+0x130/0x360 [ 797.622075][ T10] netlink_unicast+0x449/0x710 [ 797.622075][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.622075][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.622075][ T10] ___sys_sendmsg+0xee/0x170 [ 797.622075][ T10] __sys_sendmsg+0xcd/0x170 [ 797.622075][ T10] do_syscall_64+0xc6/0x1e0 [ 797.622075][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.622075][ T10] [ 797.624207][ T10] unregister_netdevice: waiting for ns1eth3 to become free. Usage count = 4 [ 797.624571][ T10] ref_tracker: ns1eth3@ffff888007b815c0 has 1/3 users at [ 797.624571][ T10] netdev_get_by_index+0x5e/0x80 [ 797.624571][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.624571][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.624571][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.624571][ T10] ipv6_add_addr+0x411/0x2000 [ 797.624571][ T10] inet6_addr_add+0x30e/0xa40 [ 797.624571][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.624571][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.624571][ T10] netlink_rcv_skb+0x130/0x360 [ 797.624571][ T10] netlink_unicast+0x449/0x710 [ 797.624571][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.624571][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.624571][ T10] ___sys_sendmsg+0xee/0x170 [ 797.624571][ T10] __sys_sendmsg+0xcd/0x170 [ 797.624571][ T10] do_syscall_64+0xc6/0x1e0 [ 797.624571][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.624571][ T10] [ 797.626938][ T10] ref_tracker: ns1eth3@ffff888007b815c0 has 1/3 users at [ 797.626938][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.626938][ T10] ipv6_find_idev+0x102/0x170 [ 797.626938][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.626938][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.626938][ T10] netlink_rcv_skb+0x130/0x360 [ 797.626938][ T10] netlink_unicast+0x449/0x710 [ 797.626938][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.626938][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.626938][ T10] ___sys_sendmsg+0xee/0x170 [ 797.626938][ T10] __sys_sendmsg+0xcd/0x170 [ 797.626938][ T10] do_syscall_64+0xc6/0x1e0 [ 797.626938][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.626938][ T10] [ 797.628808][ T10] ref_tracker: ns1eth3@ffff888007b815c0 has 1/3 users at [ 797.628808][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.628808][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.628808][ T10] ipv6_find_idev+0x102/0x170 [ 797.628808][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.628808][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.628808][ T10] netlink_rcv_skb+0x130/0x360 [ 797.628808][ T10] netlink_unicast+0x449/0x710 [ 797.628808][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.628808][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.628808][ T10] ___sys_sendmsg+0xee/0x170 [ 797.628808][ T10] __sys_sendmsg+0xcd/0x170 [ 797.628808][ T10] do_syscall_64+0xc6/0x1e0 [ 797.628808][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.628808][ T10] [ 797.630892][ T10] unregister_netdevice: waiting for ns2eth3 to become free. Usage count = 4 [ 797.631177][ T10] ref_tracker: ns2eth3@ffff888007b845c0 has 1/3 users at [ 797.631177][ T10] netdev_get_by_index+0x5e/0x80 [ 797.631177][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.631177][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.631177][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.631177][ T10] ipv6_add_addr+0x411/0x2000 [ 797.631177][ T10] inet6_addr_add+0x30e/0xa40 [ 797.631177][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.631177][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.631177][ T10] netlink_rcv_skb+0x130/0x360 [ 797.631177][ T10] netlink_unicast+0x449/0x710 [ 797.631177][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.631177][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.631177][ T10] ___sys_sendmsg+0xee/0x170 [ 797.631177][ T10] __sys_sendmsg+0xcd/0x170 [ 797.631177][ T10] do_syscall_64+0xc6/0x1e0 [ 797.631177][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.631177][ T10] [ 797.633598][ T10] ref_tracker: ns2eth3@ffff888007b845c0 has 1/3 users at [ 797.633598][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.633598][ T10] ipv6_find_idev+0x102/0x170 [ 797.633598][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.633598][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.633598][ T10] netlink_rcv_skb+0x130/0x360 [ 797.633598][ T10] netlink_unicast+0x449/0x710 [ 797.633598][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.633598][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.633598][ T10] ___sys_sendmsg+0xee/0x170 [ 797.633598][ T10] __sys_sendmsg+0xcd/0x170 [ 797.633598][ T10] do_syscall_64+0xc6/0x1e0 [ 797.633598][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.633598][ T10] [ 797.635470][ T10] ref_tracker: ns2eth3@ffff888007b845c0 has 1/3 users at [ 797.635470][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.635470][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.635470][ T10] ipv6_find_idev+0x102/0x170 [ 797.635470][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.635470][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.635470][ T10] netlink_rcv_skb+0x130/0x360 [ 797.635470][ T10] netlink_unicast+0x449/0x710 [ 797.635470][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.635470][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.635470][ T10] ___sys_sendmsg+0xee/0x170 [ 797.635470][ T10] __sys_sendmsg+0xcd/0x170 [ 797.635470][ T10] do_syscall_64+0xc6/0x1e0 [ 797.635470][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.635470][ T10] [ 797.637652][ T10] unregister_netdevice: waiting for ns1eth2 to become free. Usage count = 4 [ 797.637942][ T10] ref_tracker: ns1eth2@ffff888004dcc5c0 has 1/3 users at [ 797.637942][ T10] netdev_get_by_index+0x5e/0x80 [ 797.637942][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.637942][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.637942][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.637942][ T10] ipv6_add_addr+0x411/0x2000 [ 797.637942][ T10] inet6_addr_add+0x30e/0xa40 [ 797.637942][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.637942][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.637942][ T10] netlink_rcv_skb+0x130/0x360 [ 797.637942][ T10] netlink_unicast+0x449/0x710 [ 797.637942][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.637942][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.637942][ T10] ___sys_sendmsg+0xee/0x170 [ 797.637942][ T10] __sys_sendmsg+0xcd/0x170 [ 797.637942][ T10] do_syscall_64+0xc6/0x1e0 [ 797.637942][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.637942][ T10] [ 797.640260][ T10] ref_tracker: ns1eth2@ffff888004dcc5c0 has 1/3 users at [ 797.640260][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.640260][ T10] ipv6_find_idev+0x102/0x170 [ 797.640260][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.640260][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.640260][ T10] netlink_rcv_skb+0x130/0x360 [ 797.640260][ T10] netlink_unicast+0x449/0x710 [ 797.640260][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.640260][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.640260][ T10] ___sys_sendmsg+0xee/0x170 [ 797.640260][ T10] __sys_sendmsg+0xcd/0x170 [ 797.640260][ T10] do_syscall_64+0xc6/0x1e0 [ 797.640260][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.640260][ T10] [ 797.642124][ T10] ref_tracker: ns1eth2@ffff888004dcc5c0 has 1/3 users at [ 797.642124][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.642124][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.642124][ T10] ipv6_find_idev+0x102/0x170 [ 797.642124][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.642124][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.642124][ T10] netlink_rcv_skb+0x130/0x360 [ 797.642124][ T10] netlink_unicast+0x449/0x710 [ 797.642124][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.642124][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.642124][ T10] ___sys_sendmsg+0xee/0x170 [ 797.642124][ T10] __sys_sendmsg+0xcd/0x170 [ 797.642124][ T10] do_syscall_64+0xc6/0x1e0 [ 797.642124][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.642124][ T10] [ 797.644206][ T10] unregister_netdevice: waiting for ns2eth2 to become free. Usage count = 4 [ 797.644571][ T10] ref_tracker: ns2eth2@ffff88803c16c5c0 has 1/3 users at [ 797.644571][ T10] netdev_get_by_index+0x5e/0x80 [ 797.644571][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.644571][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.644571][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.644571][ T10] ipv6_add_addr+0x411/0x2000 [ 797.644571][ T10] inet6_addr_add+0x30e/0xa40 [ 797.644571][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.644571][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.644571][ T10] netlink_rcv_skb+0x130/0x360 [ 797.644571][ T10] netlink_unicast+0x449/0x710 [ 797.644571][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.644571][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.644571][ T10] ___sys_sendmsg+0xee/0x170 [ 797.644571][ T10] __sys_sendmsg+0xcd/0x170 [ 797.644571][ T10] do_syscall_64+0xc6/0x1e0 [ 797.644571][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.644571][ T10] [ 797.646942][ T10] ref_tracker: ns2eth2@ffff88803c16c5c0 has 1/3 users at [ 797.646942][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.646942][ T10] ipv6_find_idev+0x102/0x170 [ 797.646942][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.646942][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.646942][ T10] netlink_rcv_skb+0x130/0x360 [ 797.646942][ T10] netlink_unicast+0x449/0x710 [ 797.646942][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.646942][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.646942][ T10] ___sys_sendmsg+0xee/0x170 [ 797.646942][ T10] __sys_sendmsg+0xcd/0x170 [ 797.646942][ T10] do_syscall_64+0xc6/0x1e0 [ 797.646942][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.646942][ T10] [ 797.648679][ T10] ref_tracker: ns2eth2@ffff88803c16c5c0 has 1/3 users at [ 797.648679][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.648679][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.648679][ T10] ipv6_find_idev+0x102/0x170 [ 797.648679][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.648679][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.648679][ T10] netlink_rcv_skb+0x130/0x360 [ 797.648679][ T10] netlink_unicast+0x449/0x710 [ 797.648679][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.648679][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.648679][ T10] ___sys_sendmsg+0xee/0x170 [ 797.648679][ T10] __sys_sendmsg+0xcd/0x170 [ 797.648679][ T10] do_syscall_64+0xc6/0x1e0 [ 797.648679][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.648679][ T10] [ 797.650691][ T10] unregister_netdevice: waiting for ns1eth1 to become free. Usage count = 4 [ 797.650976][ T10] ref_tracker: ns1eth1@ffff888007b695c0 has 1/3 users at [ 797.650976][ T10] netdev_get_by_index+0x5e/0x80 [ 797.650976][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.650976][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.650976][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.650976][ T10] ipv6_add_addr+0x411/0x2000 [ 797.650976][ T10] inet6_addr_add+0x30e/0xa40 [ 797.650976][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.650976][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.650976][ T10] netlink_rcv_skb+0x130/0x360 [ 797.650976][ T10] netlink_unicast+0x449/0x710 [ 797.650976][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.650976][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.650976][ T10] ___sys_sendmsg+0xee/0x170 [ 797.650976][ T10] __sys_sendmsg+0xcd/0x170 [ 797.650976][ T10] do_syscall_64+0xc6/0x1e0 [ 797.650976][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.650976][ T10] [ 797.653330][ T10] ref_tracker: ns1eth1@ffff888007b695c0 has 1/3 users at [ 797.653330][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.653330][ T10] ipv6_find_idev+0x102/0x170 [ 797.653330][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.653330][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.653330][ T10] netlink_rcv_skb+0x130/0x360 [ 797.653330][ T10] netlink_unicast+0x449/0x710 [ 797.653330][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.653330][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.653330][ T10] ___sys_sendmsg+0xee/0x170 [ 797.653330][ T10] __sys_sendmsg+0xcd/0x170 [ 797.653330][ T10] do_syscall_64+0xc6/0x1e0 [ 797.653330][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.653330][ T10] [ 797.655142][ T10] ref_tracker: ns1eth1@ffff888007b695c0 has 1/3 users at [ 797.655142][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.655142][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.655142][ T10] ipv6_find_idev+0x102/0x170 [ 797.655142][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.655142][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.655142][ T10] netlink_rcv_skb+0x130/0x360 [ 797.655142][ T10] netlink_unicast+0x449/0x710 [ 797.655142][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.655142][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.655142][ T10] ___sys_sendmsg+0xee/0x170 [ 797.655142][ T10] __sys_sendmsg+0xcd/0x170 [ 797.655142][ T10] do_syscall_64+0xc6/0x1e0 [ 797.655142][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.655142][ T10] [ 797.657229][ T10] unregister_netdevice: waiting for ns2eth1 to become free. Usage count = 4 [ 797.657516][ T10] ref_tracker: ns2eth1@ffff8880058915c0 has 1/3 users at [ 797.657516][ T10] netdev_get_by_index+0x5e/0x80 [ 797.657516][ T10] fib6_nh_init+0x3d8/0x15b0 [ 797.657516][ T10] ip6_route_info_create+0xf18/0x17d0 [ 797.657516][ T10] addrconf_f6i_alloc+0x244/0x410 [ 797.657516][ T10] ipv6_add_addr+0x411/0x2000 [ 797.657516][ T10] inet6_addr_add+0x30e/0xa40 [ 797.657516][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 797.657516][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.657516][ T10] netlink_rcv_skb+0x130/0x360 [ 797.657516][ T10] netlink_unicast+0x449/0x710 [ 797.657516][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.657516][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.657516][ T10] ___sys_sendmsg+0xee/0x170 [ 797.657516][ T10] __sys_sendmsg+0xcd/0x170 [ 797.657516][ T10] do_syscall_64+0xc6/0x1e0 [ 797.657516][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.657516][ T10] [ 797.659959][ T10] ref_tracker: ns2eth1@ffff8880058915c0 has 1/3 users at [ 797.659959][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 797.659959][ T10] ipv6_find_idev+0x102/0x170 [ 797.659959][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.659959][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.659959][ T10] netlink_rcv_skb+0x130/0x360 [ 797.659959][ T10] netlink_unicast+0x449/0x710 [ 797.659959][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.659959][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.659959][ T10] ___sys_sendmsg+0xee/0x170 [ 797.659959][ T10] __sys_sendmsg+0xcd/0x170 [ 797.659959][ T10] do_syscall_64+0xc6/0x1e0 [ 797.659959][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.659959][ T10] [ 797.661777][ T10] ref_tracker: ns2eth1@ffff8880058915c0 has 1/3 users at [ 797.661777][ T10] neigh_parms_alloc+0x1e5/0x510 [ 797.661777][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 797.661777][ T10] ipv6_find_idev+0x102/0x170 [ 797.661777][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 797.661777][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 797.661777][ T10] netlink_rcv_skb+0x130/0x360 [ 797.661777][ T10] netlink_unicast+0x449/0x710 [ 797.661777][ T10] netlink_sendmsg+0x723/0xbe0 [ 797.661777][ T10] ____sys_sendmsg+0x7b2/0xa10 [ 797.661777][ T10] ___sys_sendmsg+0xee/0x170 [ 797.661777][ T10] __sys_sendmsg+0xcd/0x170 [ 797.661777][ T10] do_syscall_64+0xc6/0x1e0 [ 797.661777][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 797.661777][ T10]