[ 2049.237656][T15406] br0: port 1(dummy0) entered blocking state
[ 2049.237845][T15406] br0: port 1(dummy0) entered disabled state
[ 2049.238019][T15406] dummy0: entered allmulticast mode
[ 2049.238997][T15406] dummy0: entered promiscuous mode
[ 2049.261523][T15407] br0: port 1(dummy0) entered blocking state
[ 2049.261804][T15407] br0: port 1(dummy0) entered forwarding state
[ 2051.231329][   T12] dummy0: left allmulticast mode
[ 2051.232275][   T12] dummy0: left promiscuous mode
[ 2051.232519][   T12] br0: port 1(dummy0) entered disabled state