[ 1783.532223] br0: port 1(dummy0) entered blocking state
[ 1783.532299] br0: port 1(dummy0) entered disabled state
[ 1783.532365] dummy0: entered allmulticast mode
[ 1783.532447] dummy0: entered promiscuous mode
[ 1783.535204] br0: port 1(dummy0) entered blocking state
[ 1783.535234] br0: port 1(dummy0) entered forwarding state
[ 1783.720091] dummy0: left allmulticast mode
[ 1783.720153] dummy0: left promiscuous mode
[ 1783.720188] br0: port 1(dummy0) entered disabled state