[ 2034.483237][ T7048] br0: port 1(dummy0) entered blocking state
[ 2034.483431][ T7048] br0: port 1(dummy0) entered disabled state
[ 2034.483614][ T7048] dummy0: entered allmulticast mode
[ 2034.484663][ T7048] dummy0: entered promiscuous mode
[ 2034.509219][ T7049] br0: port 1(dummy0) entered blocking state
[ 2034.509563][ T7049] br0: port 1(dummy0) entered forwarding state
[ 2036.449623][   T12] dummy0: left allmulticast mode
[ 2036.449908][   T12] dummy0: left promiscuous mode
[ 2036.450129][   T12] br0: port 1(dummy0) entered disabled state