[10634.896552] unregister_netdevice: waiting for v3 to become free. Usage count = 7
[10634.896569] unregister_netdevice: waiting for w2 to become free. Usage count = 6
[10634.896735] unregister_netdevice: waiting for v4 to become free. Usage count = 13
[10634.896774] unregister_netdevice: waiting for lo to become free. Usage count = 2