[ 1808.701395] br0: port 1(dummy0) entered blocking state
[ 1808.701464] br0: port 1(dummy0) entered disabled state
[ 1808.701532] dummy0: entered allmulticast mode
[ 1808.701611] dummy0: entered promiscuous mode
[ 1808.704814] br0: port 1(dummy0) entered blocking state
[ 1808.704848] br0: port 1(dummy0) entered forwarding state
[ 1808.949394] dummy0: left allmulticast mode
[ 1808.949456] dummy0: left promiscuous mode
[ 1808.949519] br0: port 1(dummy0) entered disabled state