[10651.456512] unregister_netdevice: waiting for v3 to become free. Usage count = 7
[10651.456591] unregister_netdevice: waiting for w2.20 to become free. Usage count = 6
[10651.456813] unregister_netdevice: waiting for v4 to become free. Usage count = 12
[10651.457019] unregister_netdevice: waiting for w2.10 to become free. Usage count = 6
[10651.457066] unregister_netdevice: waiting for w2 to become free. Usage count = 3
[10651.457108] unregister_netdevice: waiting for lo to become free. Usage count = 2