[ 1727.508375] br0: port 1(dummy0) entered blocking state
[ 1727.508413] br0: port 1(dummy0) entered disabled state
[ 1727.508449] dummy0: entered allmulticast mode
[ 1727.508497] dummy0: entered promiscuous mode
[ 1727.511312] br0: port 1(dummy0) entered blocking state
[ 1727.511372] br0: port 1(dummy0) entered forwarding state
[ 1727.707488] dummy0: left allmulticast mode
[ 1727.707521] dummy0: left promiscuous mode
[ 1727.707550] br0: port 1(dummy0) entered disabled state