[ 1773.012903] br0: port 1(dummy0) entered blocking state
[ 1773.012973] br0: port 1(dummy0) entered disabled state
[ 1773.013027] dummy0: entered allmulticast mode
[ 1773.013097] dummy0: entered promiscuous mode
[ 1773.016488] br0: port 1(dummy0) entered blocking state
[ 1773.016508] br0: port 1(dummy0) entered forwarding state
[ 1773.260481] dummy0: left allmulticast mode
[ 1773.260512] dummy0: left promiscuous mode
[ 1773.260532] br0: port 1(dummy0) entered disabled state