[ 1707.141331] br0: port 1(dummy0) entered blocking state
[ 1707.141373] br0: port 1(dummy0) entered disabled state
[ 1707.141413] dummy0: entered allmulticast mode
[ 1707.141466] dummy0: entered promiscuous mode
[ 1707.144418] br0: port 1(dummy0) entered blocking state
[ 1707.144483] br0: port 1(dummy0) entered forwarding state
[ 1707.334353] dummy0: left allmulticast mode
[ 1707.334384] dummy0: left promiscuous mode
[ 1707.334415] br0: port 1(dummy0) entered disabled state