[ 1665.323596] br0: port 1(dummy0) entered blocking state
[ 1665.323647] br0: port 1(dummy0) entered disabled state
[ 1665.323685] dummy0: entered allmulticast mode
[ 1665.323737] dummy0: entered promiscuous mode
[ 1665.326548] br0: port 1(dummy0) entered blocking state
[ 1665.326610] br0: port 1(dummy0) entered forwarding state
[ 1665.528227] dummy0: left allmulticast mode
[ 1665.528323] dummy0: left promiscuous mode
[ 1665.528423] br0: port 1(dummy0) entered disabled state