[ 1226.773345] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1237.013335] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1247.252335] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1257.493337] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1267.732344] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1277.973333] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1288.213334] unregister_netdevice: waiting for lo to become free. Usage count = 0