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To: MARK SAYER <MSAYER@cuscal.com.au>
cc: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@FreeBSD.ORG>
Subject: Re: IPPROTO_IPDIVERT undeclared error in natd 
In-reply-to: Your message of "Wed, 04 Jun 1997 11:04:42 +1000."
             <199706040107.SAA06532@hub.freebsd.org> 
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Date: Wed, 04 Jun 1997 08:38:04 +0100
From: Brian Somers <brian@awfulhak.org>
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> I'm happy to say that I am making progress with this...but still having
> trouble. Trying to make the natd binaries..I finally got my in_cksum.h
> and got passed that hurdle....but now I am getting an undeclared error
> in the natd.c source. I get the following error at compilation:
> 
> ===> alias
> 
> ===> natd
> 
> cc -O -Wall -g -I../alias   -c natd.c
> 
> natd.c: In function `main':
> 
> natd.c:178: `IPPROTO_DIVERT' undeclared (first use this function)
> 
> natd.c:178: (Each undeclared identifier is reported only once
> 
> natd.c:178: for each function it appears in.)
> 
> *** Error code 1
> 
> 
> 
> Stop.
> 
> *** Error code 1
> 
> 
> 
> Stop.                   
> 
> This is the source code that is referring to IPPROTO_IPDIVERT 
> 
> /*
> 
>  * Create divert sockets. Use only one socket if -p was specified
> 
>  * on command line. Otherwise, create separate sockets for
> 
>  * outgoing and incoming connnections.
> 
>  */
> 
>         if (inOutPort) {
> 
> 
> 
>                 divertInOut = socket (PF_INET, SOCK_RAW,
> IPPROTO_DIVERT);       
>                 if (divertInOut == -1)
> 
>                         Quit ("Unable to create divert socket.");
> 
> 
> 
>                 divertIn  = -1;
> 
>                 divertOut = -1; 
> 
> Where should this have been declared? I have recompiled my kernel with
> the IP_FIREWALL And IP_DIVERT options and am running Walnut Creek
> FreeBSD 2.1.6-RELEASE #0

natd doesn't work in 2.1.*.  The divert stuff wasn't stable enough.
Certainly, if there was divert stuff there back then, the -p option
doesn't work - you need the -i & -o options instead (there was a problem
with the divert loopback avoidance code).

> Mark.

I'd suggest going to at least 2.2.1 if you want natd, otherwise
use ppp -alias if you're masquerading on a serial interface.
-- 
Brian <brian@awfulhak.org>, <brian@freebsd.org>
      <http://www.awfulhak.org>
Don't _EVER_ lose your sense of humour....