[Zarathust]

Is it possible to manipulate traffic / drop it? A long time ago, I've been trying to build transparent tunnels, so that the user does not have to configure anything special to use it. The biggest difficulty I faced was to drop the original traffic to only allow the newly crafted one.

Is this something that your library helps with?.

[pea-tear]

You can't drop the original traffic using the library. You could capture it, modify it and send it though. That + some iptables rules to drop the original traffic would be sufficient I guess.