[ 1855.781422] br0: port 1(dummy0) entered blocking state
[ 1855.781479] br0: port 1(dummy0) entered disabled state
[ 1855.781526] dummy0: entered allmulticast mode
[ 1855.781599] dummy0: entered promiscuous mode
[ 1855.785478] br0: port 1(dummy0) entered blocking state
[ 1855.785519] br0: port 1(dummy0) entered forwarding state
[ 1856.076754] dummy0: left allmulticast mode
[ 1856.076806] dummy0: left promiscuous mode
[ 1856.076839] br0: port 1(dummy0) entered disabled state