[ 1664.201193] br0: port 1(dummy0) entered blocking state
[ 1664.201269] br0: port 1(dummy0) entered disabled state
[ 1664.201339] dummy0: entered allmulticast mode
[ 1664.201423] dummy0: entered promiscuous mode
[ 1664.204703] br0: port 1(dummy0) entered blocking state
[ 1664.204742] br0: port 1(dummy0) entered forwarding state
[ 1664.426623] dummy0: left allmulticast mode
[ 1664.426693] dummy0: left promiscuous mode
[ 1664.426761] br0: port 1(dummy0) entered disabled state