[ 1837.764160][T20084] br0: port 1(dummy0) entered blocking state
[ 1837.764357][T20084] br0: port 1(dummy0) entered disabled state
[ 1837.764519][T20084] dummy0: entered allmulticast mode
[ 1837.765503][T20084] dummy0: entered promiscuous mode
[ 1837.794164][T20085] br0: port 1(dummy0) entered blocking state
[ 1837.794425][T20085] br0: port 1(dummy0) entered forwarding state
[ 1839.753702][   T12] dummy0: left allmulticast mode
[ 1839.754571][   T12] dummy0: left promiscuous mode
[ 1839.754791][   T12] br0: port 1(dummy0) entered disabled state