[ 2178.399654][  T706] br0: port 1(dummy0) entered blocking state
[ 2178.399881][  T706] br0: port 1(dummy0) entered disabled state
[ 2178.400655][  T706] dummy0: entered allmulticast mode
[ 2178.401608][  T706] dummy0: entered promiscuous mode
[ 2178.434643][  T707] br0: port 1(dummy0) entered blocking state
[ 2178.435383][  T707] br0: port 1(dummy0) entered forwarding state
[ 2180.445825][   T12] dummy0: left allmulticast mode
[ 2180.446826][   T12] dummy0: left promiscuous mode
[ 2180.447071][   T12] br0: port 1(dummy0) entered disabled state