[ 2237.588249][T30493] br0: port 1(dummy0) entered blocking state
[ 2237.588560][T30493] br0: port 1(dummy0) entered disabled state
[ 2237.588849][T30493] dummy0: entered allmulticast mode
[ 2237.590005][T30493] dummy0: entered promiscuous mode
[ 2237.630328][T30494] br0: port 1(dummy0) entered blocking state
[ 2237.630729][T30494] br0: port 1(dummy0) entered forwarding state
[ 2240.431098][   T12] dummy0: left allmulticast mode
[ 2240.432560][   T12] dummy0: left promiscuous mode
[ 2240.433548][   T12] br0: port 1(dummy0) entered disabled state