[ 1679.720025] br0: port 1(dummy0) entered blocking state
[ 1679.720065] br0: port 1(dummy0) entered disabled state
[ 1679.720096] dummy0: entered allmulticast mode
[ 1679.720157] dummy0: entered promiscuous mode
[ 1679.722916] br0: port 1(dummy0) entered blocking state
[ 1679.722983] br0: port 1(dummy0) entered forwarding state
[ 1679.904158] dummy0: left allmulticast mode
[ 1679.904223] dummy0: left promiscuous mode
[ 1679.904258] br0: port 1(dummy0) entered disabled state