[ 1679.637581] br0: port 1(dummy0) entered blocking state
[ 1679.637663] br0: port 1(dummy0) entered disabled state
[ 1679.637741] dummy0: entered allmulticast mode
[ 1679.637831] dummy0: entered promiscuous mode
[ 1679.641444] br0: port 1(dummy0) entered blocking state
[ 1679.641482] br0: port 1(dummy0) entered forwarding state
[ 1679.880895] dummy0: left allmulticast mode
[ 1679.880970] dummy0: left promiscuous mode
[ 1679.881034] br0: port 1(dummy0) entered disabled state