[ 1763.202215] br0: port 1(dummy0) entered blocking state
[ 1763.202298] br0: port 1(dummy0) entered disabled state
[ 1763.202368] dummy0: entered allmulticast mode
[ 1763.202457] dummy0: entered promiscuous mode
[ 1763.206063] br0: port 1(dummy0) entered blocking state
[ 1763.206098] br0: port 1(dummy0) entered forwarding state
[ 1763.478238] dummy0: left allmulticast mode
[ 1763.478312] dummy0: left promiscuous mode
[ 1763.478348] br0: port 1(dummy0) entered disabled state