[ 1727.125446] br0: port 1(dummy0) entered blocking state
[ 1727.125494] br0: port 1(dummy0) entered disabled state
[ 1727.125526] dummy0: entered allmulticast mode
[ 1727.125584] dummy0: entered promiscuous mode
[ 1727.128011] br0: port 1(dummy0) entered blocking state
[ 1727.128046] br0: port 1(dummy0) entered forwarding state
[ 1727.308420] dummy0: left allmulticast mode
[ 1727.308459] dummy0: left promiscuous mode
[ 1727.308486] br0: port 1(dummy0) entered disabled state