[ 1711.288296] br0: port 1(dummy0) entered blocking state
[ 1711.288336] br0: port 1(dummy0) entered disabled state
[ 1711.288367] dummy0: entered allmulticast mode
[ 1711.288417] dummy0: entered promiscuous mode
[ 1711.290866] br0: port 1(dummy0) entered blocking state
[ 1711.290903] br0: port 1(dummy0) entered forwarding state
[ 1711.455471] dummy0: left allmulticast mode
[ 1711.455502] dummy0: left promiscuous mode
[ 1711.455527] br0: port 1(dummy0) entered disabled state