[ 1609.191491] br0: port 1(dummy0) entered blocking state
[ 1609.191563] br0: port 1(dummy0) entered disabled state
[ 1609.191645] dummy0: entered allmulticast mode
[ 1609.191735] dummy0: entered promiscuous mode
[ 1609.194631] br0: port 1(dummy0) entered blocking state
[ 1609.194664] br0: port 1(dummy0) entered forwarding state
[ 1609.383725] dummy0: left allmulticast mode
[ 1609.383755] dummy0: left promiscuous mode
[ 1609.383782] br0: port 1(dummy0) entered disabled state