[ 1696.247977] br0: port 1(dummy0) entered blocking state
[ 1696.248046] br0: port 1(dummy0) entered disabled state
[ 1696.248113] dummy0: entered allmulticast mode
[ 1696.248195] dummy0: entered promiscuous mode
[ 1696.250925] br0: port 1(dummy0) entered blocking state
[ 1696.250953] br0: port 1(dummy0) entered forwarding state
[ 1696.432905] dummy0: left allmulticast mode
[ 1696.432938] dummy0: left promiscuous mode
[ 1696.433016] br0: port 1(dummy0) entered disabled state