[ 1227.004976] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1237.245972] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1247.485985] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1257.725983] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1267.964986] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1278.205970] unregister_netdevice: waiting for lo to become free. Usage count = 0
[ 1288.445974] unregister_netdevice: waiting for lo to become free. Usage count = 0