[ 1597.059208] br0: port 1(dummy0) entered blocking state
[ 1597.059248] br0: port 1(dummy0) entered disabled state
[ 1597.059275] dummy0: entered allmulticast mode
[ 1597.059332] dummy0: entered promiscuous mode
[ 1597.061899] br0: port 1(dummy0) entered blocking state
[ 1597.061963] br0: port 1(dummy0) entered forwarding state
[ 1597.247542] dummy0: left allmulticast mode
[ 1597.247576] dummy0: left promiscuous mode
[ 1597.247603] br0: port 1(dummy0) entered disabled state