[ 2289.099662][T12750] br0: port 1(dummy0) entered blocking state
[ 2289.100006][T12750] br0: port 1(dummy0) entered disabled state
[ 2289.100880][T12750] dummy0: entered allmulticast mode
[ 2289.102080][T12750] dummy0: entered promiscuous mode
[ 2289.137189][T12751] br0: port 1(dummy0) entered blocking state
[ 2289.137555][T12751] br0: port 1(dummy0) entered forwarding state
[ 2291.613677][   T12] dummy0: left allmulticast mode
[ 2291.614615][   T12] dummy0: left promiscuous mode
[ 2291.615062][   T12] br0: port 1(dummy0) entered disabled state