On 7 Jun 2012, at 18:12, Paul_Koning at Dell.com wrote: The main difference I can see vs. having the implementation in the kernel is that the kernel one gives you an integrated API. DecNET/Linux uses sockets, so an existing socket based app can be made to run over DECnet with potentially very little work. On the other hand, a userland implementation would need a different mechanism for the communication between the application and the DECnet daemon. Again it was suggested that the DECNET daemon listens on a socket, then you just plop the destination and/or listening details in via that mechanism - it's one line or so of code :) Sampsa