Hi All, As some of you have requested, I've extracted the code from my (under work) VPN which talks to the TUN/TAP device under Linux (/dev/net/tun). Some things to note: 1) I've only tested this under Linux. 2) The help-win.c file under cbits HAS allowed similar code to talk to the TUN/TAP driver used by the OpenVPN project, but I haven't implemented this functionality yet. 3) The help-bsd.c file under cbits HAS allowed Mac/BSD flavors to talk to a TUN/TAP driver, but I've never tested this and haven't implemented this functionality yet. I don't have a whole lot there right now, but keep a lookout for more releases with some examples and better docs (as I get around to it). For a very verbose example, you can look at how I use the Network.TUNTAP module in this project: http://github.com/sw17ch/Scurry, specifically http://github.com/sw17ch/Scurry/blob/master/src/Scurry/TAPTask.hs. Hackage: http://hackage.haskell.org/package/tuntap GitHub: http://github.com/sw17ch/tuntap John Van Enk PS: Thanks to Matthew Isleb and Job Vranish for their help on the C code used.