[ 2010.820924][ T9817] br0: port 1(dummy0) entered blocking state
[ 2010.821111][ T9817] br0: port 1(dummy0) entered disabled state
[ 2010.821271][ T9817] dummy0: entered allmulticast mode
[ 2010.822125][ T9817] dummy0: entered promiscuous mode
[ 2010.844854][ T9818] br0: port 1(dummy0) entered blocking state
[ 2010.845162][ T9818] br0: port 1(dummy0) entered forwarding state
[ 2012.683531][   T12] dummy0: left allmulticast mode
[ 2012.683950][   T12] dummy0: left promiscuous mode
[ 2012.684178][   T12] br0: port 1(dummy0) entered disabled state