[sf-lug] resolver problem in Fedora

Nathan Hoover nathan at foo-o-rama.com
Sun Nov 21 19:21:19 PST 2010


The difference between your ssh and dig is that with the dig, you're telling
it where to go to resolve the name. Is the /etc/resolv.conf correct on the
Fedora boxes?

N

On Sun, Nov 21, 2010 at 7:09 PM, Alex Kleider <a_kleider at yahoo.com> wrote:

> DNS Quandry
>
> I am experiencing a most perplexing and seemingly inconsistent problem with
> url to IP address resolution that might interest (some) list member(s).
> I "administer" two home networks.
> One is in DockTown in Redwood City where DNS services are provided by
> unbound running on a SheevaPlug and here everything works as you'd expect it
> should. (I should acknowledge here that I was able to accomplish this only
> because of advice provide on this list by Rick Moen.)
> The other is in Bolinas where a consumer grade router (Netopia) is
> providing the service. (I hope in the not too distant future to get a plug
> going here as well.)
> Users include (amongst others) an Ubuntu and two Fedora laptops. All is
> well in Redwood City. In Bolinas however, only the Ubuntu machine works
> properly. Both Fedora laptops are unable to resolve.
> But it's even more mysterious because these same fedora machines CAN ping
> and they can dig while in Bolinas, but neither ssh nor firefox can resolve.
> How can this be????
> As a ps, I'll add the code snippets to show what I mean about dig working
> but ssh not. (the Netopia router is at IP address 10.0.0.2; alex at zar is an
> Ubuntu laptop, mike at ee is a fedora laptop, another fedora laptop behaves
> the same way; a MacBookPro laptop and a M$Windows laptop have no problems)
> I have to assume this is somehow a bug in the Fedora distro but I can't
> understand how ping and dig can resolve, without other programs being able
> to do so.
> cheers,
> alex
> p.s.
>
> # mike at ee is on a Fedora 14 laptop:
>
> [mike at ee ~]$ dig kleico.net @10.0.0.2 +short
> 76.191.206.83
>
> [mike at ee ~]$ ssh alex at kleico.net
> ssh: Could not resolve hostname kleico.net: Name or service not known
> [mike at ee ~]$
>
> ##########################################################################
>
> # alex at zar is on an Ubuntu 10.10 laptop:
>
> alex at zar:~$ dig kleico.net @10.0.0.2 +short
> 76.191.206.83
>
> alex at zar:~$ ssh alex at kleico.net
> Linux plug 2.6.32-trunk-kirkwood #1 Mon Jan 11 10:57:12 UTC 2010 armv5tel
>
> The programs included with the Debian GNU/Linux system are free software;
> the exact distribution terms for each program are described in the
> individual files in /usr/share/doc/*/copyright.
>
> Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
> permitted by applicable law.
> You have new mail.
> Last login: Sat Nov 20 12:50:33 2010 from
> 76-191-205-213.dsl.dynamic.sonic.net
> alex at plug:~$
>
>
>
>
> a_kleider at yahoo.com
>
>
>
>
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