[ 1929.368793][T13293] br0: port 1(dummy0) entered blocking state
[ 1929.368990][T13293] br0: port 1(dummy0) entered disabled state
[ 1929.369170][T13293] dummy0: entered allmulticast mode
[ 1929.370264][T13293] dummy0: entered promiscuous mode
[ 1929.398934][T13294] br0: port 1(dummy0) entered blocking state
[ 1929.399282][T13294] br0: port 1(dummy0) entered forwarding state
[ 1931.255363][   T12] dummy0: left allmulticast mode
[ 1931.255533][   T12] dummy0: left promiscuous mode
[ 1931.255754][   T12] br0: port 1(dummy0) entered disabled state