[ 1666.672053] br0: port 1(dummy0) entered blocking state
[ 1666.672091] br0: port 1(dummy0) entered disabled state
[ 1666.672126] dummy0: entered allmulticast mode
[ 1666.672175] dummy0: entered promiscuous mode
[ 1666.674576] br0: port 1(dummy0) entered blocking state
[ 1666.674633] br0: port 1(dummy0) entered forwarding state
[ 1666.837066] dummy0: left allmulticast mode
[ 1666.837093] dummy0: left promiscuous mode
[ 1666.837123] br0: port 1(dummy0) entered disabled state