[ 1708.150661] br0: port 1(dummy0) entered blocking state
[ 1708.150734] br0: port 1(dummy0) entered disabled state
[ 1708.150806] dummy0: entered allmulticast mode
[ 1708.150901] dummy0: entered promiscuous mode
[ 1708.154159] br0: port 1(dummy0) entered blocking state
[ 1708.154190] br0: port 1(dummy0) entered forwarding state
[ 1708.366717] dummy0: left allmulticast mode
[ 1708.366748] dummy0: left promiscuous mode
[ 1708.366775] br0: port 1(dummy0) entered disabled state