[ 1748.325315] br0: port 1(dummy0) entered blocking state
[ 1748.325361] br0: port 1(dummy0) entered disabled state
[ 1748.325396] dummy0: entered allmulticast mode
[ 1748.325453] dummy0: entered promiscuous mode
[ 1748.329063] br0: port 1(dummy0) entered blocking state
[ 1748.329098] br0: port 1(dummy0) entered forwarding state
[ 1748.589048] dummy0: left allmulticast mode
[ 1748.589083] dummy0: left promiscuous mode
[ 1748.589113] br0: port 1(dummy0) entered disabled state