[ 1633.920556] br0: port 1(dummy0) entered blocking state
[ 1633.920634] br0: port 1(dummy0) entered disabled state
[ 1633.920709] dummy0: entered allmulticast mode
[ 1633.920795] dummy0: entered promiscuous mode
[ 1633.923678] br0: port 1(dummy0) entered blocking state
[ 1633.923711] br0: port 1(dummy0) entered forwarding state
[ 1634.123611] dummy0: left allmulticast mode
[ 1634.123679] dummy0: left promiscuous mode
[ 1634.123745] br0: port 1(dummy0) entered disabled state