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Date:      Fri, 2 Jan 1998 10:20:27 +0100
From:      J Wunsch <j@uriah.heep.sax.de>
To:        Greg Lehey <grog@lemis.com>
Cc:        Brian Somers <brian@awfulhak.org>, John-Mark Gurney <gurney_j@efn.org>, freebsd-bugs@hub.freebsd.org, freebsd-hackers@FreeBSD.ORG
Subject:   Re: kern/5404: slXX slip (tun & ppp) interfaces always point to point
Message-ID:  <19980102102027.41384@uriah.heep.sax.de>
In-Reply-To: <19980102105504.61189@lemis.com>; from Greg Lehey on Fri, Jan 02, 1998 at 10:55:04AM %2B1030
References:  <199801010130.RAA10049@hub.freebsd.org> <199801011325.NAA17803@awfulhak.demon.co.uk> <19980102105504.61189@lemis.com>

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As Greg Lehey wrote:

> While I agree that the net mask makes no sense on a point-to-point
> link, many people don't.  My ISP (Telstra) asks me to set a net mask
> of 0xffffffc0 on my link.  I wonder why.

Because they (or their routers) are stupid, and they don't know it
better.  You'll be surprised to find how many router vendors don't
understand the very basics of IP routing.

> >> Routes to the remote end apart from the implied host route seem to be
> >> dangerous to me, and they break the current behaviour (i.e. could
> >> cause surprises for people who are used to how it's done now).
> 
> I don't know what you mean here (I didn't see the original message).
> In almost every case, you have a route to the remote end, usually a
> default route.  I'm guessing that you mean something else.

It's too much out of context that i remember myself.  I think my
remark was about other _automatically_ installed routes (at ifconfig
time).  There's nothing wrong with `route add ...' later on, but the
admin should always be required to do this manually.  (In Linux, you
even gotta install the interface route yourself.)

-- 
cheers, J"org

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



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