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- Newsgroups: comp.mail.uucp
- Path: sparky!uunet!mcsun!Germany.EU.net!news.netmbx.de!mailgzrz.TU-Berlin.DE!math.fu-berlin.de!fub!heaven7.in-berlin.de!martini
- From: martini@heaven7.in-berlin.de (Martin P. Ibert)
- Subject: Re: Any easy way to filter this type of UUCP traffic?
- Message-ID: <HER8MAE@heaven7.in-berlin.de>
- Date: Tue, 10 Nov 1992 08:04:25 GMT
- References: <3965@ecicrl.ocunix.on.ca>
- Organization: The Seventh Heaven, Berlin, Germany
- Lines: 40
-
- clewis@ferret.ocunix.on.ca (Chris Lewis) writes:
- > In article <1992Nov7.232211.4599@blilly.UUCP> bruce@blilly.UUCP (Bruce Lilly) writes:
- > >Pathalias will generate a ``backlink'' even if one half of the
- > >link is not explicitly listed in the maps.
- > pathalias will indeed generate a backlink, but a backlink with
- > cost of DEAD.
- The pathalias(1) manual page implies this, but it is not true. The backlink
- is much "deader" than dead, showing here:
-
- /home/martini $ pathalias -l a -c << EOF
- a b(DEAD)
- c a
- EOF
- 0 a %s
- 100000000 c c!%s
- 1000000 b b!%s
-
- The link a!b is marked DEAD, and ends up with a cost factor of 1000000. But
- the link a!C (which is a backlink) has a cost factor that is 100 times that
- high!
-
- > Notice that the cost for ecicrl!uunet is "DEAD" instead of merely
- > double the default (4000) as one would expect for an equal-cost
- > implicit backlink.
- No, it's not. It's a hundred times dead (see above).
-
- > >If you're paranoid about others using the link, explicitly set the
- > >link cost as "(DEAD)",
- > This is already the default, so is unnecessary, and perhaps makes
- > it a little harder for someone to spot an obviously deprecated
- > backlink and manually insert a lower cost in their local overrides
- > to get around your intent.
-
- And, as you can see, it is counterproductive to advertise a link as "merely"
- DEAD when it would be a hundred times DEAD if you didn't.
- --
- ___*___ Martin P. Ibert - Westendallee 100 d, D-1000 Berlin 19 - +4930-3056541
- ======= E-mail to martini@{heaven7.{in-berlin.de|sub.org}|cloud9.in-berlin.de}
- ||| ||| ----------------------------------------------------------------------
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