[ 1655.251399] br0: port 1(dummy0) entered blocking state
[ 1655.251485] br0: port 1(dummy0) entered disabled state
[ 1655.251551] dummy0: entered allmulticast mode
[ 1655.251637] dummy0: entered promiscuous mode
[ 1655.254480] br0: port 1(dummy0) entered blocking state
[ 1655.254514] br0: port 1(dummy0) entered forwarding state
[ 1655.450220] dummy0: left allmulticast mode
[ 1655.450292] dummy0: left promiscuous mode
[ 1655.450352] br0: port 1(dummy0) entered disabled state