[ 1895.215790][T12554] br0: port 1(dummy0) entered blocking state
[ 1895.216002][T12554] br0: port 1(dummy0) entered disabled state
[ 1895.216200][T12554] dummy0: entered allmulticast mode
[ 1895.217928][T12554] dummy0: entered promiscuous mode
[ 1895.241029][T12555] br0: port 1(dummy0) entered blocking state
[ 1895.241287][T12555] br0: port 1(dummy0) entered forwarding state
[ 1897.186956][   T12] dummy0: left allmulticast mode
[ 1897.188014][   T12] dummy0: left promiscuous mode
[ 1897.188238][   T12] br0: port 1(dummy0) entered disabled state