[ 2034.030107][ T3651] br0: port 1(dummy0) entered blocking state
[ 2034.030291][ T3651] br0: port 1(dummy0) entered disabled state
[ 2034.030452][ T3651] dummy0: entered allmulticast mode
[ 2034.031986][ T3651] dummy0: entered promiscuous mode
[ 2034.055974][ T3652] br0: port 1(dummy0) entered blocking state
[ 2034.056390][ T3652] br0: port 1(dummy0) entered forwarding state
[ 2036.059974][   T12] dummy0: left allmulticast mode
[ 2036.060800][   T12] dummy0: left promiscuous mode
[ 2036.061043][   T12] br0: port 1(dummy0) entered disabled state