[ 9719.690505] unregister_netdevice: waiting for xfrm0 to become free. Usage count = 8
[ 9720.690499] unregister_netdevice: waiting for link1 to become free. Usage count = 10
[ 9720.690662] unregister_netdevice: waiting for link0 to become free. Usage count = 11
[ 9721.634507] unregister_netdevice: waiting for eth0.20 to become free. Usage count = 6
[ 9721.634659] unregister_netdevice: waiting for eth0.10 to become free. Usage count = 6
[ 9721.634702] unregister_netdevice: waiting for eth0 to become free. Usage count = 3
[ 9729.770503] unregister_netdevice: waiting for xfrm0 to become free. Usage count = 8
[ 9730.762502] unregister_netdevice: waiting for link1 to become free. Usage count = 10
[ 9730.762655] unregister_netdevice: waiting for link0 to become free. Usage count = 11
[ 9731.690496] unregister_netdevice: waiting for eth0.20 to become free. Usage count = 6
[ 9731.690655] unregister_netdevice: waiting for eth0.10 to become free. Usage count = 6
[ 9731.690701] unregister_netdevice: waiting for eth0 to become free. Usage count = 3
[ 9739.826511] unregister_netdevice: waiting for xfrm0 to become free. Usage count = 8
[ 9740.818508] unregister_netdevice: waiting for link1 to become free. Usage count = 10
[ 9740.818668] unregister_netdevice: waiting for link0 to become free. Usage count = 11
[ 9741.763508] unregister_netdevice: waiting for eth0.20 to become free. Usage count = 6
[ 9741.763658] unregister_netdevice: waiting for eth0.10 to become free. Usage count = 6
[ 9741.763702] unregister_netdevice: waiting for eth0 to become free. Usage count = 3