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Date:      Wed, 21 Jun 2000 23:28:23 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Terry Lambert <tlambert@primenet.com>
Cc:        brian@Awfulhak.org (Brian Somers), winter@jurai.net (Matthew N. Dodd), arch@FreeBSD.ORG, brian@hak.lan.awfulhak.org
Subject:   Re: Software detection of link integrity 
Message-ID:  <62877.961622903@critter.freebsd.dk>
In-Reply-To: Your message of "Wed, 21 Jun 2000 21:17:38 -0000." <200006212117.OAA11432@usr02.primenet.com> 

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In message <200006212117.OAA11432@usr02.primenet.com>, Terry Lambert writes:
>> >> I did this entirely for sppp, but it applies fully to any other
>> >> interface: an ethernet should remain configured but remove the
>> >> routes if the cable is unplugged.
>> >
>> >No, I think the aim here is to keep the routes but to adjust them so 
>> >that they're via an interface rather than an IP number, something 
>> >like:
>> 
>> We should not keep an route to a net which is down, that is just wrong,
>> and defeats the pupose of routing daemons like gated/zebra etc.
>
>What about a dial on demand device that is transiently connected
>to the Internet, either through an integrated Analog or ISDN modem?

But a dial on demand line is a layered concept.  You have a transient
physical line with a layer on top of it which pretends to be a
permanent line.

In this case we obviously talk about the toplayer, not the bottom layer.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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