[ 1875.127277][T30679] br0: port 1(dummy0) entered blocking state
[ 1875.127485][T30679] br0: port 1(dummy0) entered disabled state
[ 1875.127665][T30679] dummy0: entered allmulticast mode
[ 1875.128934][T30679] dummy0: entered promiscuous mode
[ 1875.151725][T30680] br0: port 1(dummy0) entered blocking state
[ 1875.151936][T30680] br0: port 1(dummy0) entered forwarding state
[ 1877.181648][   T70] dummy0: left allmulticast mode
[ 1877.181835][   T70] dummy0: left promiscuous mode
[ 1877.182055][   T70] br0: port 1(dummy0) entered disabled state