[ 1727.438974] br0: port 1(dummy0) entered blocking state
[ 1727.439011] br0: port 1(dummy0) entered disabled state
[ 1727.439047] dummy0: entered allmulticast mode
[ 1727.439097] dummy0: entered promiscuous mode
[ 1727.442718] br0: port 1(dummy0) entered blocking state
[ 1727.442781] br0: port 1(dummy0) entered forwarding state
[ 1727.716135] dummy0: left allmulticast mode
[ 1727.716166] dummy0: left promiscuous mode
[ 1727.716195] br0: port 1(dummy0) entered disabled state