[ 1693.113817] br0: port 1(dummy0) entered blocking state
[ 1693.113893] br0: port 1(dummy0) entered disabled state
[ 1693.113966] dummy0: entered allmulticast mode
[ 1693.114058] dummy0: entered promiscuous mode
[ 1693.116961] br0: port 1(dummy0) entered blocking state
[ 1693.117028] br0: port 1(dummy0) entered forwarding state
[ 1693.312676] dummy0: left allmulticast mode
[ 1693.312743] dummy0: left promiscuous mode
[ 1693.312808] br0: port 1(dummy0) entered disabled state