[ 1963.159251] br0: port 1(dummy0) entered blocking state
[ 1963.159287] br0: port 1(dummy0) entered disabled state
[ 1963.159324] dummy0: entered allmulticast mode
[ 1963.159376] dummy0: entered promiscuous mode
[ 1963.163195] br0: port 1(dummy0) entered blocking state
[ 1963.163228] br0: port 1(dummy0) entered forwarding state
[ 1963.449389] dummy0: left allmulticast mode
[ 1963.449423] dummy0: left promiscuous mode
[ 1963.449462] br0: port 1(dummy0) entered disabled state