[ 1838.580391] br0: port 1(dummy0) entered blocking state
[ 1838.580433] br0: port 1(dummy0) entered disabled state
[ 1838.580467] dummy0: entered allmulticast mode
[ 1838.580522] dummy0: entered promiscuous mode
[ 1838.584116] br0: port 1(dummy0) entered blocking state
[ 1838.584149] br0: port 1(dummy0) entered forwarding state
[ 1838.854471] dummy0: left allmulticast mode
[ 1838.854534] dummy0: left promiscuous mode
[ 1838.854597] br0: port 1(dummy0) entered disabled state