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Date:      Thu, 25 Feb 1999 15:45:44 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Brendan Kosowski <brendan@bmk.com.au>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Manual Routing
Message-ID:  <19990225154544.A431@lemis.com>
In-Reply-To: <Pine.BSF.3.96.990225154941.638A-100000@garfield>; from Brendan Kosowski on Thu, Feb 25, 1999 at 04:06:53PM %2B1100
References:  <19990225150908.D26110@lemis.com> <Pine.BSF.3.96.990225154941.638A-100000@garfield>

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On Thursday, 25 February 1999 at 16:06:53 +1100, Brendan Kosowski wrote:
> On Thu, 25 Feb 1999, Greg Lehey wrote:
>
>> On Wednesday, 24 February 1999 at 12:35:46 +1100, Brendan Kosowski wrote:
>>>
>>> How do I set up FreeBSD so that all the Routing info must be added
>>> to the routing table MANUALY, and also stop arp from adding entries to the
>>> table ???
>>
>> Stop arp.
>>
>> What do you really want to do?  If you stop arp (or the routing),
>> systems won't be able to contact you.
>
> I want FreeBSD to stop ASSUMING routing info, and I want to be in
> the situation where I must add all routing info to the routing table
> manualy ( as is the case with Linux ).
>
> I also want arp to stop caching the address resolution info so that
> arp must perform an IP to ETHERNET address translation EVERY TIME.
>
> I am trying to solve a routing problem that only occurs when arp ads
> a certain entry into my routing table.
>
> Hope that better explains my original question.

Possibly, but we're not there yet.  Let me rephrase:

You want to slow the net down to a crawl in order to trace a problem.
For every *packet* that you send out on the Ethernet, you want an arp
request.  For example:

15:42:22.597876 arp who-has yana.lemis.com tell freebie.lemis.com
15:42:22.598413 arp reply yana.lemis.com is-at 0:0:b4:33:6d:a2
15:42:22.598477 freebie.lemis.com > yana.lemis.com: icmp: echo request
15:42:22.599072 yana.lemis.com > freebie.lemis.com: icmp: echo reply
15:42:43.946114 arp who-has yana.lemis.com tell freebie.lemis.com
15:42:43.946644 arp reply yana.lemis.com is-at 0:0:b4:33:6d:a2
15:42:43.946710 freebie.lemis.com > yana.lemis.com: icmp: echo request
15:42:43.947274 yana.lemis.com > freebie.lemis.com: icmp: echo reply

I don't think there's much to ASSUME about an Ethernet.  If you're
connected to one, that's where the data goes.  I'm trying to make sure
that you're not confusing arp with routed.  If you're running routed,
you should probably stop it, unless you have a good reason to run it.
Even then, you should consider replacing it with gated.  Maybe you
should give a more detailed description of the problem you're chasing.

Greg
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