[ 1775.378381][ T2216] br0: port 1(dummy0) entered blocking state
[ 1775.378574][ T2216] br0: port 1(dummy0) entered disabled state
[ 1775.385116][ T2216] dummy0: entered allmulticast mode
[ 1775.385981][ T2216] dummy0: entered promiscuous mode
[ 1775.407284][ T2217] br0: port 1(dummy0) entered blocking state
[ 1775.407699][ T2217] br0: port 1(dummy0) entered forwarding state
[ 1777.251195][   T12] dummy0: left allmulticast mode
[ 1777.251345][   T12] dummy0: left promiscuous mode
[ 1777.251551][   T12] br0: port 1(dummy0) entered disabled state