[ 1647.637166] br0: port 1(dummy0) entered blocking state
[ 1647.637238] br0: port 1(dummy0) entered disabled state
[ 1647.637305] dummy0: entered allmulticast mode
[ 1647.637389] dummy0: entered promiscuous mode
[ 1647.640156] br0: port 1(dummy0) entered blocking state
[ 1647.640218] br0: port 1(dummy0) entered forwarding state
[ 1647.817576] dummy0: left allmulticast mode
[ 1647.817611] dummy0: left promiscuous mode
[ 1647.817645] br0: port 1(dummy0) entered disabled state