[ 1728.327643] br0: port 1(dummy0) entered blocking state
[ 1728.327684] br0: port 1(dummy0) entered disabled state
[ 1728.327721] dummy0: entered allmulticast mode
[ 1728.327781] dummy0: entered promiscuous mode
[ 1728.330249] br0: port 1(dummy0) entered blocking state
[ 1728.330310] br0: port 1(dummy0) entered forwarding state
[ 1728.510797] dummy0: left allmulticast mode
[ 1728.510828] dummy0: left promiscuous mode
[ 1728.510855] br0: port 1(dummy0) entered disabled state