Comment 3 for bug 275340

This is still an issue for me. Even though the "only accept from localhost" option is selected, I am able to connect from other nodes on the network to this one using port 5900. It does not seem to only listen to itself.

As requested, here is the netstat outpout with the option on:
tcp6 0 0 :::5900 :::* LISTEN 6899/vino-server

and with the option off:
tcp6 0 0 :::5900 :::* LISTEN 6899/vino-server

As you can very well see, I am not getting the same (expected) results as you.