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Date: Tue, 14 Oct 1997 10:03:41 -0700 (PDT)
From: Doug White <dwhite@gdi.uoregon.edu>
Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: David Kulp <dkulp@neomorphic.com>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: lp0 laplink gateway?
In-Reply-To: <34434E5E.41C67EA6@neomorphic.com>
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On Tue, 14 Oct 1997, David Kulp wrote:

> I'm having troubles trying to get a machine on one side of
> a laplink to go route through the other side.  Here's what I've
> got:
> 
> machine1 (ip1) is a laptop with a laplink parallel cable.
> machine2 (ip2) is a desktop with a laplink connected to machine1
> and an ethernet card connecting to a hub and ultimately to a
> router (ip3) that connects to the outside world.

OK.  I assume that all IPs are valid for your network (ie, you're not
using a 10.x.x.x or 192.168.x.x IP for the laptop).

> on machine1 I have:
> ifconfig_lp0="inet ip1 ip2 netmask 0xffffff00"
> defaultrouter="ip2"
> 
> on machine2 I have:
> ifconfig_lp0="inet ip2 ip1 netmask 0xffffff00"
> ifconfig_de0="inet ip2 netmask 0xffffff00"
> defaultrouter="ip3"

OK.

> I'm running "routed -s" on machine2.

Probably not necessary.

> on machine1, I can ping ip2 successfully, but i can't ping ip3.
> on machine2, I can ping ip1 and ip2.
> 
> shouldn't ip1 be able to reach ip3 and the rest of the LAN and/or
> internet?

You won't get anywhere to start if you haven't enabled gatewaying in
/etc/rc.conf or /etc/sysconfig.  I think that should be it, if machine2
and machine1 can reach one another.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major