[ 2045.329913][ T3856] br0: port 1(dummy0) entered blocking state
[ 2045.330124][ T3856] br0: port 1(dummy0) entered disabled state
[ 2045.330287][ T3856] dummy0: entered allmulticast mode
[ 2045.331173][ T3856] dummy0: entered promiscuous mode
[ 2045.364876][ T3857] br0: port 1(dummy0) entered blocking state
[ 2045.365056][ T3857] br0: port 1(dummy0) entered forwarding state
[ 2047.847169][   T67] dummy0: left allmulticast mode
[ 2047.847735][   T67] dummy0: left promiscuous mode
[ 2047.847963][   T67] br0: port 1(dummy0) entered disabled state