[ 1982.411507][ T3694] br0: port 1(dummy0) entered blocking state
[ 1982.411698][ T3694] br0: port 1(dummy0) entered disabled state
[ 1982.411874][ T3694] dummy0: entered allmulticast mode
[ 1982.412726][ T3694] dummy0: entered promiscuous mode
[ 1982.434776][ T3695] br0: port 1(dummy0) entered blocking state
[ 1982.435180][ T3695] br0: port 1(dummy0) entered forwarding state
[ 1984.436392][   T12] dummy0: left allmulticast mode
[ 1984.436688][   T12] dummy0: left promiscuous mode
[ 1984.436930][   T12] br0: port 1(dummy0) entered disabled state