On Thu, Feb 9, 2017 at 4:19 AM, Paul Ruizendaal <pnr@planet.nl> wrote:

The best one seems to have been the 3Com stack, which puts IP in the
kernel and TCP in a daemon.

This is true.

By the way, this implementation is also

where SLIP seems to have originated.

hmmm... I'm not so sure I see that leap/where you came to that conclusion. I'm guessing you are thinking same from the picture on page 37 where Bob shows an RS-232 driver in the architectural diagram. FYI: The code base came with a 3Cxxx driver for their Ethernet board only and as I said, the Steve Glaser wrote the second driver for the Unibus HyperChannel and I think there was a driver for the Xerox 3Meg ethernet controller but I don't remember ever seeing it in the source kit.

FYI: If my memory serves me, the first SLIP implementations for any IP stack were done I thought for some reason at Harvard with some hacks to the BBN/MIT tcp stack on the DZ drivers as an alternative to the Berknet stack (not IP). FYI: Berknet was very low costs, 9600baud serial point to point to links, primarily for moving mail and small files, we can take this off line if you need to know more.