Are you planning to have it speak unencapsulated, too? That would be nice for talking to real DECnet nodes. paul On Jun 22, 2012, at 2:31 PM, Rob Jarratt wrote: I am making a little progress on a user mode DECnet router that will run on Raspberry Pi and on Windows. There is still a long way to go, but I want to get the basic design right in terms on the network interfacing. Can someone tell me how Cisco and Multinet encapsulate DECnet packets sent over the internet? Thanks Rob