[ 1612.088555] br0: port 1(dummy0) entered blocking state
[ 1612.088624] br0: port 1(dummy0) entered disabled state
[ 1612.088689] dummy0: entered allmulticast mode
[ 1612.088778] dummy0: entered promiscuous mode
[ 1612.091785] br0: port 1(dummy0) entered blocking state
[ 1612.091826] br0: port 1(dummy0) entered forwarding state
[ 1612.290178] dummy0: left allmulticast mode
[ 1612.290209] dummy0: left promiscuous mode
[ 1612.290236] br0: port 1(dummy0) entered disabled state