Date: Wed, 15 Jan 1997 23:17:45 -0800 From: Julian Elischer <julian@whistle.com> To: Brian Somers <brian@awfulhak.demon.co.uk> Cc: "Daniel O'Callaghan" <danny@panda.hilink.com.au>, Archie Cobbs <archie@whistle.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: FreeBSD as an ISDN Router Message-ID: <32DDD619.2781E494@whistle.com> References: <199701160031.AAA15181@awfulhak.demon.co.uk>
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Brian Somers wrote: > > [.....] > > And some might want to run alias stuff over ethernet or other, and not > > want ppp at all. > > I agree completely - but the last time this was discussed (AFAIK) people > didn't really want to dirty the tcp stack. that's why divert(4) sockets exist.. they pass things OUT of the kernel for processing.. > > > > I think the best way to do this sort of thing would be to take advantage of > something like a firewall'ing hook, and writing an alias lkm that massaged the > packets at that level. That way, unless you "modload lkm_alias.o" and then > condition a few interfaces, the tcp stack will be pure. look at divert sockets and the 'divert' keywork in ipfw.. that's EXACTLY how it works..
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