[ 1783.117495] br0: port 1(dummy0) entered blocking state
[ 1783.117569] br0: port 1(dummy0) entered disabled state
[ 1783.117637] dummy0: entered allmulticast mode
[ 1783.117722] dummy0: entered promiscuous mode
[ 1783.120994] br0: port 1(dummy0) entered blocking state
[ 1783.121029] br0: port 1(dummy0) entered forwarding state
[ 1783.357930] dummy0: left allmulticast mode
[ 1783.358009] dummy0: left promiscuous mode
[ 1783.358098] br0: port 1(dummy0) entered disabled state