[ 1990.292172][T28898] br0: port 1(dummy0) entered blocking state
[ 1990.292360][T28898] br0: port 1(dummy0) entered disabled state
[ 1990.292524][T28898] dummy0: entered allmulticast mode
[ 1990.293385][T28898] dummy0: entered promiscuous mode
[ 1990.317549][T28899] br0: port 1(dummy0) entered blocking state
[ 1990.317766][T28899] br0: port 1(dummy0) entered forwarding state
[ 1992.325853][   T69] dummy0: left allmulticast mode
[ 1992.326824][   T69] dummy0: left promiscuous mode
[ 1992.327119][   T69] br0: port 1(dummy0) entered disabled state