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Date:      Sun, 25 Nov 2001 06:00:32 -0500
From:      The Anarcat <anarcat@anarcat.dyndns.org>
To:        setantae <setantae@submonkey.net>
Cc:        FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject:   Re: can't do reverse dns with /etc/hosts
Message-ID:  <3C00CF50.21B0F04B@anarcat.dyndns.org>
References:  <5.1.0.14.0.20011123164749.0245ec60@mail.enterit.com> <20011114173647.D66694@blossom.cjclark.org> <20011115012039.GA61093@shall.anarcat.dyndns.org> <20011114173647.D66694@blossom.cjclark.org> <5.1.0.14.0.20011123164749.0245ec60@mail.enterit.com> <5.1.0.14.0.20011123172728.02c61518@mail.enterit.com> <20011124103734.GB386@irrelevant.org> <3BFFF17E.D2E2F7C1@anarcat.dyndns.org> <20011124214006.GA943@rhadamanth>

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Unfortunatly,

traceroute to 10.0.0.1 (10.0.0.1), 64 hops max, 40 byte packets
traceroute: sendto: Permission denied
 1 traceroute: wrote 10.0.0.1 40 chars, ret=-1

traceroute makes a lookup only if it receives a reply:

traceroute to 10.0.0.2 (10.0.0.2), 64 hops max, 40 byte packets
 1  foo (10.0.0.2)  2.634 ms  4.243 ms  4.105 ms

Good to know, though...

A.

setantae wrote:
> 
> On Sat, Nov 24, 2001 at 02:14:06PM -0500, John Smith wrote:
> >
> >
> > Simon Dick wrote:
> > >
> > > I guess my method of just using ping <hostname> and seeing what IP it tries
> > > to ping won't be suitable for this? :)
> >
> > no because I want to test reverse DNS. ping doesn't lookup the name of a
> > given address, IIRC.
> 
> Ok, how about traceroute then ?
> 
> Ceri
> 
> --
> keep a mild groove on

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