[ 2137.932455][T19305] br0: port 1(dummy0) entered blocking state
[ 2137.932660][T19305] br0: port 1(dummy0) entered disabled state
[ 2137.932835][T19305] dummy0: entered allmulticast mode
[ 2137.934713][T19305] dummy0: entered promiscuous mode
[ 2137.962992][T19306] br0: port 1(dummy0) entered blocking state
[ 2137.963241][T19306] br0: port 1(dummy0) entered forwarding state
[ 2139.922156][   T12] dummy0: left allmulticast mode
[ 2139.922446][   T12] dummy0: left promiscuous mode
[ 2139.922660][   T12] br0: port 1(dummy0) entered disabled state