From owner-freebsd-questions  Mon Jul 29 08:13:52 1996
Return-Path: owner-questions
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id IAA03721
          for questions-outgoing; Mon, 29 Jul 1996 08:13:52 -0700 (PDT)
Received: from sergio.lenzi ([200.247.20.44])
          by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id IAA03599
          for <questions@freebsd.org>; Mon, 29 Jul 1996 08:12:45 -0700 (PDT)
Received: (from lenzi@localhost) by sergio.lenzi (8.7.5/8.7.3) id MAA00381; Mon, 29 Jul 1996 12:12:10 GMT
Date: Mon, 29 Jul 1996 12:12:08 +0000 ()
From: "Lenzi, Sergio" <lenzi@cwbone.bsi.com.br>
X-Sender: lenzi@sergio.lenzi
To: Wes Side Story <wdorale@rs1.mtmc.edu>
cc: Gunter.Loos@ngonet.be, questions@freebsd.org
Subject: Re: user PPP server problem
In-Reply-To: <Pine.A32.3.92.960725141732.28202A-100000@rs1.mtmc.edu>
Message-ID: <Pine.BSF.3.91.960729120532.314C-100000@sergio.lenzi>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-questions@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

> I did set gateway to "yes" in the sysconfig file(and also put the "options
> gateway" in the kernel config just in case).  And upon bootup a message
> does come across about gateway enabled...  Some one said that the solution
> is having the FreeBSD machine act as a proxy arp.  I have "enable proxy"
> in the ppp.conf file but still no luck.  Do I need to use the "arp"
> command?  If so what do I use for the hex(physical?) address of the
> dial-in PC?
> Thanks for the help
> 

Hello all.

Regarding to ppp & gateway...

the machine will route packages if the netmask the ppp is locates is outside
the net the machine is in.

EX.

the ed0 net is 255.255.255.0 and the ip is 1.2.3.x
the ppp interface will work as route if the ip is 1.2.5.x

if the ed0 netmask is 255.255.255.240 or 0xfffffff0 and ip 1.2.3.4
the ppp interface can be 1.2.3.17...
because 17 lies outside netmask F0 

Hope this will help.