[  417.428017][   T10] unregister_netdevice: waiting for eth0.20 to become free. Usage count = 6
[  417.428373][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  417.428373][   T10]      netdev_get_by_index+0x5e/0x80
[  417.428373][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.428373][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.428373][   T10]      ip6_route_add+0x1c/0x140
[  417.428373][   T10]      addrconf_prefix_route+0x2a6/0x430
[  417.428373][   T10]      inet6_addr_add+0x4f8/0xa40
[  417.428373][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.428373][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.428373][   T10]      netlink_rcv_skb+0x130/0x360
[  417.428373][   T10]      netlink_unicast+0x449/0x710
[  417.428373][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.428373][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.428373][   T10]      ___sys_sendmsg+0xee/0x170
[  417.428373][   T10]      __sys_sendmsg+0xcd/0x170
[  417.428373][   T10]      do_syscall_64+0xc6/0x1e0
[  417.428373][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.428373][   T10] 
[  417.430499][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  417.430499][   T10]      netdev_get_by_index+0x5e/0x80
[  417.430499][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.430499][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.430499][   T10]      addrconf_f6i_alloc+0x315/0x560
[  417.430499][   T10]      ipv6_add_addr+0x411/0x2000
[  417.430499][   T10]      inet6_addr_add+0x30e/0xa40
[  417.430499][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.430499][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.430499][   T10]      netlink_rcv_skb+0x130/0x360
[  417.430499][   T10]      netlink_unicast+0x449/0x710
[  417.430499][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.430499][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.430499][   T10]      ___sys_sendmsg+0xee/0x170
[  417.430499][   T10]      __sys_sendmsg+0xcd/0x170
[  417.430499][   T10]      do_syscall_64+0xc6/0x1e0
[  417.430499][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.430499][   T10] 
[  417.432561][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  417.432561][   T10]      netdev_get_by_index+0x5e/0x80
[  417.432561][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.432561][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.432561][   T10]      ip6_route_add+0x1c/0x140
[  417.432561][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[  417.432561][   T10]      addrconf_add_dev+0xe2/0x170
[  417.432561][   T10]      inet6_addr_add+0x12f/0xa40
[  417.432561][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.432561][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.432561][   T10]      netlink_rcv_skb+0x130/0x360
[  417.432561][   T10]      netlink_unicast+0x449/0x710
[  417.432561][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.432561][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.432561][   T10]      ___sys_sendmsg+0xee/0x170
[  417.432561][   T10]      __sys_sendmsg+0xcd/0x170
[  417.432561][   T10]      do_syscall_64+0xc6/0x1e0
[  417.432561][   T10] 
[  417.434581][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  417.434581][   T10]      ipv6_add_dev+0x3ba/0x11c0
[  417.434581][   T10]      ipv6_find_idev+0x102/0x170
[  417.434581][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  417.434581][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.434581][   T10]      netlink_rcv_skb+0x130/0x360
[  417.434581][   T10]      netlink_unicast+0x449/0x710
[  417.434581][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.434581][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.434581][   T10]      ___sys_sendmsg+0xee/0x170
[  417.434581][   T10]      __sys_sendmsg+0xcd/0x170
[  417.434581][   T10]      do_syscall_64+0xc6/0x1e0
[  417.434581][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.434581][   T10] 
[  417.436158][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  417.436158][   T10]      neigh_parms_alloc+0x1e5/0x510
[  417.436158][   T10]      ipv6_add_dev+0x2fe/0x11c0
[  417.436158][   T10]      ipv6_find_idev+0x102/0x170
[  417.436158][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  417.436158][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.436158][   T10]      netlink_rcv_skb+0x130/0x360
[  417.436158][   T10]      netlink_unicast+0x449/0x710
[  417.436158][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.436158][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.436158][   T10]      ___sys_sendmsg+0xee/0x170
[  417.436158][   T10]      __sys_sendmsg+0xcd/0x170
[  417.436158][   T10]      do_syscall_64+0xc6/0x1e0
[  417.436158][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.436158][   T10] 
[  417.438095][   T10] unregister_netdevice: waiting for eth0.10 to become free. Usage count = 6
[  417.438385][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  417.438385][   T10]      netdev_get_by_index+0x5e/0x80
[  417.438385][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.438385][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.438385][   T10]      ip6_route_add+0x1c/0x140
[  417.438385][   T10]      addrconf_prefix_route+0x2a6/0x430
[  417.438385][   T10]      inet6_addr_add+0x4f8/0xa40
[  417.438385][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.438385][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.438385][   T10]      netlink_rcv_skb+0x130/0x360
[  417.438385][   T10]      netlink_unicast+0x449/0x710
[  417.438385][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.438385][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.438385][   T10]      ___sys_sendmsg+0xee/0x170
[  417.438385][   T10]      __sys_sendmsg+0xcd/0x170
[  417.438385][   T10]      do_syscall_64+0xc6/0x1e0
[  417.438385][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.438385][   T10] 
[  417.440472][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  417.440472][   T10]      netdev_get_by_index+0x5e/0x80
[  417.440472][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.440472][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.440472][   T10]      addrconf_f6i_alloc+0x315/0x560
[  417.440472][   T10]      ipv6_add_addr+0x411/0x2000
[  417.440472][   T10]      inet6_addr_add+0x30e/0xa40
[  417.440472][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.440472][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.440472][   T10]      netlink_rcv_skb+0x130/0x360
[  417.440472][   T10]      netlink_unicast+0x449/0x710
[  417.440472][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.440472][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.440472][   T10]      ___sys_sendmsg+0xee/0x170
[  417.440472][   T10]      __sys_sendmsg+0xcd/0x170
[  417.440472][   T10]      do_syscall_64+0xc6/0x1e0
[  417.440472][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.440472][   T10] 
[  417.442567][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  417.442567][   T10]      netdev_get_by_index+0x5e/0x80
[  417.442567][   T10]      fib6_nh_init+0x3d8/0x1580
[  417.442567][   T10]      ip6_route_info_create+0xf18/0x17d0
[  417.442567][   T10]      ip6_route_add+0x1c/0x140
[  417.442567][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[  417.442567][   T10]      addrconf_add_dev+0xe2/0x170
[  417.442567][   T10]      inet6_addr_add+0x12f/0xa40
[  417.442567][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  417.442567][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.442567][   T10]      netlink_rcv_skb+0x130/0x360
[  417.442567][   T10]      netlink_unicast+0x449/0x710
[  417.442567][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.442567][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.442567][   T10]      ___sys_sendmsg+0xee/0x170
[  417.442567][   T10]      __sys_sendmsg+0xcd/0x170
[  417.442567][   T10]      do_syscall_64+0xc6/0x1e0
[  417.442567][   T10] 
[  417.444788][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  417.444788][   T10]      ipv6_add_dev+0x3ba/0x11c0
[  417.444788][   T10]      ipv6_find_idev+0x102/0x170
[  417.444788][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  417.444788][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.444788][   T10]      netlink_rcv_skb+0x130/0x360
[  417.444788][   T10]      netlink_unicast+0x449/0x710
[  417.444788][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.444788][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.444788][   T10]      ___sys_sendmsg+0xee/0x170
[  417.444788][   T10]      __sys_sendmsg+0xcd/0x170
[  417.444788][   T10]      do_syscall_64+0xc6/0x1e0
[  417.444788][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.444788][   T10] 
[  417.446523][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  417.446523][   T10]      neigh_parms_alloc+0x1e5/0x510
[  417.446523][   T10]      ipv6_add_dev+0x2fe/0x11c0
[  417.446523][   T10]      ipv6_find_idev+0x102/0x170
[  417.446523][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  417.446523][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.446523][   T10]      netlink_rcv_skb+0x130/0x360
[  417.446523][   T10]      netlink_unicast+0x449/0x710
[  417.446523][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.446523][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.446523][   T10]      ___sys_sendmsg+0xee/0x170
[  417.446523][   T10]      __sys_sendmsg+0xcd/0x170
[  417.446523][   T10]      do_syscall_64+0xc6/0x1e0
[  417.446523][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.446523][   T10] 
[  417.448515][   T10] unregister_netdevice: waiting for eth0 to become free. Usage count = 3
[  417.448762][   T10] ref_tracker: veth0@ffff888021b015e0 has 2/2 users at
[  417.448762][   T10]      vlan_dev_init+0x97c/0xdd0
[  417.448762][   T10]      register_netdevice+0x4d3/0x1690
[  417.448762][   T10]      register_vlan_dev+0x162/0x4a0
[  417.448762][   T10]      vlan_newlink+0x393/0x610
[  417.448762][   T10]      rtnl_newlink_create+0x341/0x850
[  417.448762][   T10]      __rtnl_newlink+0xac9/0xd80
[  417.448762][   T10]      rtnl_newlink+0x63/0xa0
[  417.448762][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  417.448762][   T10]      netlink_rcv_skb+0x130/0x360
[  417.448762][   T10]      netlink_unicast+0x449/0x710
[  417.448762][   T10]      netlink_sendmsg+0x723/0xbe0
[  417.448762][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  417.448762][   T10]      ___sys_sendmsg+0xee/0x170
[  417.448762][   T10]      __sys_sendmsg+0xcd/0x170
[  417.448762][   T10]      do_syscall_64+0xc6/0x1e0
[  417.448762][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  417.448762][   T10] 
[  422.181374][ T3697] eth0: renamed from r1h1
[  422.541181][ T3699] eth0: renamed from r2h1
[  423.036477][ T3702] eth2: renamed from r2h2
[  423.532449][ T3705] eth1: renamed from r2r1
[  424.309035][ T3710] br0: port 1(eth0) entered blocking state
[  424.309341][ T3710] br0: port 1(eth0) entered disabled state
[  424.309569][ T3710] eth0: entered allmulticast mode
[  424.310742][ T3710] eth0: entered promiscuous mode
[  424.314010][   T51] br0: port 1(eth0) entered blocking state
[  424.314217][   T51] br0: port 1(eth0) entered forwarding state
[  424.468927][ T3711] br0: port 2(eth1) entered blocking state
[  424.469241][ T3711] br0: port 2(eth1) entered disabled state
[  424.469456][ T3711] eth1: entered allmulticast mode
[  424.470609][ T3711] eth1: entered promiscuous mode
[  424.471408][   T49] br0: port 2(eth1) entered blocking state
[  424.471599][   T49] br0: port 2(eth1) entered forwarding state
[  427.572022][   T10] unregister_netdevice: waiting for eth0.20 to become free. Usage count = 6
[  427.572461][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  427.572461][   T10]      netdev_get_by_index+0x5e/0x80
[  427.572461][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.572461][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.572461][   T10]      ip6_route_add+0x1c/0x140
[  427.572461][   T10]      addrconf_prefix_route+0x2a6/0x430
[  427.572461][   T10]      inet6_addr_add+0x4f8/0xa40
[  427.572461][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.572461][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.572461][   T10]      netlink_rcv_skb+0x130/0x360
[  427.572461][   T10]      netlink_unicast+0x449/0x710
[  427.572461][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.572461][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.572461][   T10]      ___sys_sendmsg+0xee/0x170
[  427.572461][   T10]      __sys_sendmsg+0xcd/0x170
[  427.572461][   T10]      do_syscall_64+0xc6/0x1e0
[  427.572461][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.572461][   T10] 
[  427.574553][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  427.574553][   T10]      netdev_get_by_index+0x5e/0x80
[  427.574553][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.574553][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.574553][   T10]      addrconf_f6i_alloc+0x315/0x560
[  427.574553][   T10]      ipv6_add_addr+0x411/0x2000
[  427.574553][   T10]      inet6_addr_add+0x30e/0xa40
[  427.574553][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.574553][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.574553][   T10]      netlink_rcv_skb+0x130/0x360
[  427.574553][   T10]      netlink_unicast+0x449/0x710
[  427.574553][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.574553][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.574553][   T10]      ___sys_sendmsg+0xee/0x170
[  427.574553][   T10]      __sys_sendmsg+0xcd/0x170
[  427.574553][   T10]      do_syscall_64+0xc6/0x1e0
[  427.574553][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.574553][   T10] 
[  427.576591][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  427.576591][   T10]      netdev_get_by_index+0x5e/0x80
[  427.576591][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.576591][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.576591][   T10]      ip6_route_add+0x1c/0x140
[  427.576591][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[  427.576591][   T10]      addrconf_add_dev+0xe2/0x170
[  427.576591][   T10]      inet6_addr_add+0x12f/0xa40
[  427.576591][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.576591][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.576591][   T10]      netlink_rcv_skb+0x130/0x360
[  427.576591][   T10]      netlink_unicast+0x449/0x710
[  427.576591][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.576591][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.576591][   T10]      ___sys_sendmsg+0xee/0x170
[  427.576591][   T10]      __sys_sendmsg+0xcd/0x170
[  427.576591][   T10]      do_syscall_64+0xc6/0x1e0
[  427.576591][   T10] 
[  427.578574][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  427.578574][   T10]      ipv6_add_dev+0x3ba/0x11c0
[  427.578574][   T10]      ipv6_find_idev+0x102/0x170
[  427.578574][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  427.578574][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.578574][   T10]      netlink_rcv_skb+0x130/0x360
[  427.578574][   T10]      netlink_unicast+0x449/0x710
[  427.578574][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.578574][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.578574][   T10]      ___sys_sendmsg+0xee/0x170
[  427.578574][   T10]      __sys_sendmsg+0xcd/0x170
[  427.578574][   T10]      do_syscall_64+0xc6/0x1e0
[  427.578574][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.578574][   T10] 
[  427.580121][   T10] ref_tracker: eth0.20@ffff888006cfc5e0 has 1/5 users at
[  427.580121][   T10]      neigh_parms_alloc+0x1e5/0x510
[  427.580121][   T10]      ipv6_add_dev+0x2fe/0x11c0
[  427.580121][   T10]      ipv6_find_idev+0x102/0x170
[  427.580121][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  427.580121][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.580121][   T10]      netlink_rcv_skb+0x130/0x360
[  427.580121][   T10]      netlink_unicast+0x449/0x710
[  427.580121][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.580121][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.580121][   T10]      ___sys_sendmsg+0xee/0x170
[  427.580121][   T10]      __sys_sendmsg+0xcd/0x170
[  427.580121][   T10]      do_syscall_64+0xc6/0x1e0
[  427.580121][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.580121][   T10] 
[  427.581848][   T10] unregister_netdevice: waiting for eth0.10 to become free. Usage count = 6
[  427.582146][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  427.582146][   T10]      netdev_get_by_index+0x5e/0x80
[  427.582146][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.582146][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.582146][   T10]      ip6_route_add+0x1c/0x140
[  427.582146][   T10]      addrconf_prefix_route+0x2a6/0x430
[  427.582146][   T10]      inet6_addr_add+0x4f8/0xa40
[  427.582146][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.582146][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.582146][   T10]      netlink_rcv_skb+0x130/0x360
[  427.582146][   T10]      netlink_unicast+0x449/0x710
[  427.582146][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.582146][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.582146][   T10]      ___sys_sendmsg+0xee/0x170
[  427.582146][   T10]      __sys_sendmsg+0xcd/0x170
[  427.582146][   T10]      do_syscall_64+0xc6/0x1e0
[  427.582146][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.582146][   T10] 
[  427.584166][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  427.584166][   T10]      netdev_get_by_index+0x5e/0x80
[  427.584166][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.584166][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.584166][   T10]      addrconf_f6i_alloc+0x315/0x560
[  427.584166][   T10]      ipv6_add_addr+0x411/0x2000
[  427.584166][   T10]      inet6_addr_add+0x30e/0xa40
[  427.584166][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.584166][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.584166][   T10]      netlink_rcv_skb+0x130/0x360
[  427.584166][   T10]      netlink_unicast+0x449/0x710
[  427.584166][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.584166][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.584166][   T10]      ___sys_sendmsg+0xee/0x170
[  427.584166][   T10]      __sys_sendmsg+0xcd/0x170
[  427.584166][   T10]      do_syscall_64+0xc6/0x1e0
[  427.584166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.584166][   T10] 
[  427.586192][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  427.586192][   T10]      netdev_get_by_index+0x5e/0x80
[  427.586192][   T10]      fib6_nh_init+0x3d8/0x1580
[  427.586192][   T10]      ip6_route_info_create+0xf18/0x17d0
[  427.586192][   T10]      ip6_route_add+0x1c/0x140
[  427.586192][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[  427.586192][   T10]      addrconf_add_dev+0xe2/0x170
[  427.586192][   T10]      inet6_addr_add+0x12f/0xa40
[  427.586192][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[  427.586192][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.586192][   T10]      netlink_rcv_skb+0x130/0x360
[  427.586192][   T10]      netlink_unicast+0x449/0x710
[  427.586192][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.586192][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.586192][   T10]      ___sys_sendmsg+0xee/0x170
[  427.586192][   T10]      __sys_sendmsg+0xcd/0x170
[  427.586192][   T10]      do_syscall_64+0xc6/0x1e0
[  427.586192][   T10] 
[  427.588192][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  427.588192][   T10]      ipv6_add_dev+0x3ba/0x11c0
[  427.588192][   T10]      ipv6_find_idev+0x102/0x170
[  427.588192][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  427.588192][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.588192][   T10]      netlink_rcv_skb+0x130/0x360
[  427.588192][   T10]      netlink_unicast+0x449/0x710
[  427.588192][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.588192][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.588192][   T10]      ___sys_sendmsg+0xee/0x170
[  427.588192][   T10]      __sys_sendmsg+0xcd/0x170
[  427.588192][   T10]      do_syscall_64+0xc6/0x1e0
[  427.588192][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.588192][   T10] 
[  427.589774][   T10] ref_tracker: eth0.10@ffff8880218d15e0 has 1/5 users at
[  427.589774][   T10]      neigh_parms_alloc+0x1e5/0x510
[  427.589774][   T10]      ipv6_add_dev+0x2fe/0x11c0
[  427.589774][   T10]      ipv6_find_idev+0x102/0x170
[  427.589774][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[  427.589774][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.589774][   T10]      netlink_rcv_skb+0x130/0x360
[  427.589774][   T10]      netlink_unicast+0x449/0x710
[  427.589774][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.589774][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.589774][   T10]      ___sys_sendmsg+0xee/0x170
[  427.589774][   T10]      __sys_sendmsg+0xcd/0x170
[  427.589774][   T10]      do_syscall_64+0xc6/0x1e0
[  427.589774][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.589774][   T10] 
[  427.591481][   T10] unregister_netdevice: waiting for eth0 to become free. Usage count = 3
[  427.591734][   T10] ref_tracker: veth0@ffff888021b015e0 has 2/2 users at
[  427.591734][   T10]      vlan_dev_init+0x97c/0xdd0
[  427.591734][   T10]      register_netdevice+0x4d3/0x1690
[  427.591734][   T10]      register_vlan_dev+0x162/0x4a0
[  427.591734][   T10]      vlan_newlink+0x393/0x610
[  427.591734][   T10]      rtnl_newlink_create+0x341/0x850
[  427.591734][   T10]      __rtnl_newlink+0xac9/0xd80
[  427.591734][   T10]      rtnl_newlink+0x63/0xa0
[  427.591734][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[  427.591734][   T10]      netlink_rcv_skb+0x130/0x360
[  427.591734][   T10]      netlink_unicast+0x449/0x710
[  427.591734][   T10]      netlink_sendmsg+0x723/0xbe0
[  427.591734][   T10]      ____sys_sendmsg+0x7b2/0xa10
[  427.591734][   T10]      ___sys_sendmsg+0xee/0x170
[  427.591734][   T10]      __sys_sendmsg+0xcd/0x170
[  427.591734][   T10]      do_syscall_64+0xc6/0x1e0
[  427.591734][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[  427.591734][   T10]