[ 1713.501881] br0: port 1(dummy0) entered blocking state
[ 1713.501931] br0: port 1(dummy0) entered disabled state
[ 1713.501967] dummy0: entered allmulticast mode
[ 1713.502018] dummy0: entered promiscuous mode
[ 1713.504391] br0: port 1(dummy0) entered blocking state
[ 1713.504422] br0: port 1(dummy0) entered forwarding state
[ 1713.668053] dummy0: left allmulticast mode
[ 1713.668120] dummy0: left promiscuous mode
[ 1713.668181] br0: port 1(dummy0) entered disabled state