[ 5037.240395] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 5043.504470] unregister_netdevice: waiting for veth0 to become free. Usage count = 11
[ 5043.504585] unregister_netdevice: waiting for eth1 to become free. Usage count = 8
[ 5047.320393] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 5053.568466] unregister_netdevice: waiting for veth0 to become free. Usage count = 11
[ 5053.568741] unregister_netdevice: waiting for eth1 to become free. Usage count = 8
[ 5057.392390] unregister_netdevice: waiting for dummy0 to become free. Usage count = 8
[ 5063.641466] unregister_netdevice: waiting for veth0 to become free. Usage count = 11
[ 5063.641643] unregister_netdevice: waiting for eth1 to become free. Usage count = 8