[ 1727.373136] br0: port 1(dummy0) entered blocking state
[ 1727.373176] br0: port 1(dummy0) entered disabled state
[ 1727.373213] dummy0: entered allmulticast mode
[ 1727.373265] dummy0: entered promiscuous mode
[ 1727.377167] br0: port 1(dummy0) entered blocking state
[ 1727.377204] br0: port 1(dummy0) entered forwarding state
[ 1727.668154] dummy0: left allmulticast mode
[ 1727.668186] dummy0: left promiscuous mode
[ 1727.668222] br0: port 1(dummy0) entered disabled state