[ 1823.295203] br0: port 1(dummy0) entered blocking state
[ 1823.295289] br0: port 1(dummy0) entered disabled state
[ 1823.295361] dummy0: entered allmulticast mode
[ 1823.295454] dummy0: entered promiscuous mode
[ 1823.299433] br0: port 1(dummy0) entered blocking state
[ 1823.299468] br0: port 1(dummy0) entered forwarding state
[ 1823.579168] dummy0: left allmulticast mode
[ 1823.579212] dummy0: left promiscuous mode
[ 1823.579244] br0: port 1(dummy0) entered disabled state