[ 1878.390440] br0: port 1(dummy0) entered blocking state
[ 1878.390482] br0: port 1(dummy0) entered disabled state
[ 1878.390524] dummy0: entered allmulticast mode
[ 1878.390582] dummy0: entered promiscuous mode
[ 1878.393993] br0: port 1(dummy0) entered blocking state
[ 1878.394027] br0: port 1(dummy0) entered forwarding state
[ 1878.635273] dummy0: left allmulticast mode
[ 1878.635311] dummy0: left promiscuous mode
[ 1878.635339] br0: port 1(dummy0) entered disabled state