[ 1817.049611] br0: port 1(dummy0) entered blocking state
[ 1817.049653] br0: port 1(dummy0) entered disabled state
[ 1817.049688] dummy0: entered allmulticast mode
[ 1817.049735] dummy0: entered promiscuous mode
[ 1817.053230] br0: port 1(dummy0) entered blocking state
[ 1817.053293] br0: port 1(dummy0) entered forwarding state
[ 1817.311659] dummy0: left allmulticast mode
[ 1817.311689] dummy0: left promiscuous mode
[ 1817.311717] br0: port 1(dummy0) entered disabled state