[ 1736.499304] br0: port 1(dummy0) entered blocking state
[ 1736.499345] br0: port 1(dummy0) entered disabled state
[ 1736.499383] dummy0: entered allmulticast mode
[ 1736.499435] dummy0: entered promiscuous mode
[ 1736.502403] br0: port 1(dummy0) entered blocking state
[ 1736.502472] br0: port 1(dummy0) entered forwarding state
[ 1736.716142] dummy0: left allmulticast mode
[ 1736.716176] dummy0: left promiscuous mode
[ 1736.716207] br0: port 1(dummy0) entered disabled state