[ 2010.944205][T30936] br0: port 1(dummy0) entered blocking state
[ 2010.944439][T30936] br0: port 1(dummy0) entered disabled state
[ 2010.944653][T30936] dummy0: entered allmulticast mode
[ 2010.946193][T30936] dummy0: entered promiscuous mode
[ 2010.975543][T30937] br0: port 1(dummy0) entered blocking state
[ 2010.975816][T30937] br0: port 1(dummy0) entered forwarding state
[ 2012.951635][   T12] dummy0: left allmulticast mode
[ 2012.952820][   T12] dummy0: left promiscuous mode
[ 2012.953057][   T12] br0: port 1(dummy0) entered disabled state