[ 1917.227345] br0: port 1(dummy0) entered blocking state
[ 1917.227399] br0: port 1(dummy0) entered disabled state
[ 1917.227436] dummy0: entered allmulticast mode
[ 1917.227489] dummy0: entered promiscuous mode
[ 1917.231076] br0: port 1(dummy0) entered blocking state
[ 1917.231108] br0: port 1(dummy0) entered forwarding state
[ 1917.485950] dummy0: left allmulticast mode
[ 1917.485979] dummy0: left promiscuous mode
[ 1917.486011] br0: port 1(dummy0) entered disabled state