[ 4819.128802] ip (305) used greatest stack depth: 12336 bytes left
[ 4822.914423] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 4832.242455] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4832.242636] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4832.946506] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 4842.267416] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4842.267567] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4843.186432] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 4849.736391] ip (509) used greatest stack depth: 12192 bytes left
[ 4852.506503] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4852.506672] unregister_netdevice: waiting for veth0 to become free. Usage count = 7
[ 4853.426416] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8