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Date: Mon, 22 Dec 1997 22:17:13 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
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Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: Chris Peltier <CPELTIER@iectech.com>
cc: "'FreeBSD-questions@FreeBSD.org'" <FreeBSD-questions@FreeBSD.ORG>
Subject: Re: Multiple class C's on the same wire
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On Mon, 15 Dec 1997, Chris Peltier wrote:

> 
> Hi there,
> I aliased a class C address (/32) to my de interface (the interface
> was already configured as being on another class C) and
> added a route to the rest of the new class C using the new aliased
> address as the gateway. So far so good. Some other FreeBsd
> machines on the original Class C started complaining about
> hosts not on the network (I guess they didn't understand some
> of the arp messages about the new class C on the same wire).
> They complained but operated without any problems. My 
> Livingston Portmasters on the other hand were a mess. All the
> arp table entries (on the freebsd boxes) for the Livingstons were
> marked as incomplete and all connectivity to proxy-arp customers
> on them was lost. Any known problems with this? Are there
> any special considerations when running multiple class C's on the
> same network? FreeBSD version was 2.1.0. I do have 2.2.5 boxes
> as well.

Everyone's netmasks *MUST* match.  Period.

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