Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!spdcc!dyer
From: dyer@spdcc.COM (Steve Dyer)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Implementing TCP/IP outside of UNIX kernel?
Message-ID: <2913@spdcc.SPDCC.COM>
Date: 1 Apr 89 00:17:58 GMT
References: <8903301431.AA19142@TIS.COM>
Reply-To: dyer@ursa-major.spdcc.COM (Steve Dyer)
Organization: S.P. Dyer Computer Consulting, Cambridge MA
Lines: 16

In article <8903301431.AA19142@TIS.COM> balenson@TIS.COM (David M. Balenson) writes:
>Is it possible to implement TCP/IP in a UNIX (Berkeley 4.{2,3}, SunOS{3,4})
>system OUTSIDE of the kernel?  I presume doing so would have a major impact
>on efficiency, but it might be much easier to program.  Does anyone know o
>any such TCP/IP implementations?  Thanks.

Phil Karn's KA9Q TCP/IP implementation can run as a user process
under most flavors of UNIX, although I wager that only those folks
without a TCP/IP implementation on a machine would bother.  I got it
running under XENIX 386 with SLIP last year, although I never really beat
on it hard.  At the time it was a monolithic program and didn't provide
a socket application library, so it was mainly of tutorial interest to me.
I haven't examined it lately.

It is available for non-commercial use via anonymous FTP on bellcore.com
in the pub/ka9q directory.