[ 1836.699547] br0: port 1(dummy0) entered blocking state
[ 1836.699627] br0: port 1(dummy0) entered disabled state
[ 1836.699694] dummy0: entered allmulticast mode
[ 1836.699788] dummy0: entered promiscuous mode
[ 1836.703412] br0: port 1(dummy0) entered blocking state
[ 1836.703445] br0: port 1(dummy0) entered forwarding state
[ 1836.988232] dummy0: left allmulticast mode
[ 1836.988273] dummy0: left promiscuous mode
[ 1836.988303] br0: port 1(dummy0) entered disabled state