Date: Wed, 21 Jun 2000 22:43:00 +0100 From: Brian Somers <brian@Awfulhak.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Terry Lambert <tlambert@primenet.com>, 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: <200006212143.WAA02255@hak.lan.Awfulhak.org> In-Reply-To: Message from Poul-Henning Kamp <phk@critter.freebsd.dk> of "Wed, 21 Jun 2000 23:28:23 %2B0200." <62877.961622903@critter.freebsd.dk>
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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.
Which unfortunately doesn't work with a dynamically assigned IP
number.
> 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.
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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