[ 1678.539306] br0: port 1(dummy0) entered blocking state
[ 1678.539347] br0: port 1(dummy0) entered disabled state
[ 1678.539385] dummy0: entered allmulticast mode
[ 1678.539439] dummy0: entered promiscuous mode
[ 1678.542817] br0: port 1(dummy0) entered blocking state
[ 1678.542850] br0: port 1(dummy0) entered forwarding state
[ 1678.773437] dummy0: left allmulticast mode
[ 1678.773465] dummy0: left promiscuous mode
[ 1678.773495] br0: port 1(dummy0) entered disabled state