[ 1716.119580] br0: port 1(dummy0) entered blocking state
[ 1716.119623] br0: port 1(dummy0) entered disabled state
[ 1716.119663] dummy0: entered allmulticast mode
[ 1716.119720] dummy0: entered promiscuous mode
[ 1716.122168] br0: port 1(dummy0) entered blocking state
[ 1716.122229] br0: port 1(dummy0) entered forwarding state
[ 1716.296780] dummy0: left allmulticast mode
[ 1716.296813] dummy0: left promiscuous mode
[ 1716.296839] br0: port 1(dummy0) entered disabled state