[ 1847.972191] br0: port 1(dummy0) entered blocking state
[ 1847.972219] br0: port 1(dummy0) entered disabled state
[ 1847.972241] dummy0: entered allmulticast mode
[ 1847.972278] dummy0: entered promiscuous mode
[ 1847.975592] br0: port 1(dummy0) entered blocking state
[ 1847.975613] br0: port 1(dummy0) entered forwarding state
[ 1848.196588] dummy0: left allmulticast mode
[ 1848.196644] dummy0: left promiscuous mode
[ 1848.196696] br0: port 1(dummy0) entered disabled state