[ 1701.601967] br0: port 1(dummy0) entered blocking state
[ 1701.602014] br0: port 1(dummy0) entered disabled state
[ 1701.602048] dummy0: entered allmulticast mode
[ 1701.602095] dummy0: entered promiscuous mode
[ 1701.604817] br0: port 1(dummy0) entered blocking state
[ 1701.604877] br0: port 1(dummy0) entered forwarding state
[ 1701.795795] dummy0: left allmulticast mode
[ 1701.795831] dummy0: left promiscuous mode
[ 1701.795861] br0: port 1(dummy0) entered disabled state