[ 1808.616387] br0: port 1(dummy0) entered blocking state
[ 1808.616478] br0: port 1(dummy0) entered disabled state
[ 1808.616550] dummy0: entered allmulticast mode
[ 1808.616651] dummy0: entered promiscuous mode
[ 1808.620835] br0: port 1(dummy0) entered blocking state
[ 1808.620876] br0: port 1(dummy0) entered forwarding state
[ 1808.934658] dummy0: left allmulticast mode
[ 1808.934704] dummy0: left promiscuous mode
[ 1808.934739] br0: port 1(dummy0) entered disabled state