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Date:      Fri, 7 Dec 2001 21:01:12 +0100
From:      Joerg Wunsch <j@uriah.heep.sax.de>
To:        freebsd-current@FreeBSD.org
Subject:   Re: rev 1.61 of /sys/netinet/in.c breaks ISDN
Message-ID:  <20011207210112.A97235@uriah.heep.sax.de>
In-Reply-To: <20011207095553.D13705@sunbay.com>; from ru@FreeBSD.org on Fri, Dec 07, 2001 at 09:55:53AM %2B0200
References:  <Alexander@leidinger.net> <200112061126.fB6BQ5v00774@Magelan.Leidinger.net> <200112061352.fB6DqnE47522@hak.lan.Awfulhak.org> <20011206162840.C82299@sunbay.com> <200112062023.fB6KNWd65603@uriah.heep.sax.de> <20011207095553.D13705@sunbay.com>

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As Ruslan Ermilov wrote:

> > phk has chosen 0.0.0.1 since it obviously cannot be a meaningful
> > statically configured address.

> OK, but is it really necessary?  It's much simpler to add routes
> over P2P interfaces using the interface name ...

You need to configure /some/ interface address for the remote end
anyway, and it must not clash with any other routing table entry,
since "ifconfig ... up" always adds an entry for the remote IP address
for p2p interfaces.  (Actually, it even tries to enter it twice, so
you get a meaningless "Address already exists." message when bringing
a p2p interface up with ifconfig.)

The politically correct solution to negotiate the remote PPP address
would have been to change the routing table entry after negotiating
the address, of course.  However, this seemed to be too much hassle
for the small&simple intent of sppp(4), in particular considering that
the only added value compared to the 0.0.0.1 hack would be that you
can reach the IP address of your peer directly.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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