[ 2078.012730][T20287] br0: port 1(dummy0) entered blocking state
[ 2078.012914][T20287] br0: port 1(dummy0) entered disabled state
[ 2078.013073][T20287] dummy0: entered allmulticast mode
[ 2078.014058][T20287] dummy0: entered promiscuous mode
[ 2078.038468][T20288] br0: port 1(dummy0) entered blocking state
[ 2078.038865][T20288] br0: port 1(dummy0) entered forwarding state
[ 2080.303436][   T12] dummy0: left allmulticast mode
[ 2080.304284][   T12] dummy0: left promiscuous mode
[ 2080.304673][   T12] br0: port 1(dummy0) entered disabled state