Re: DNS not working in Fedora 14

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On Sun, 2011-01-02 at 00:33 -0800, Gordon Messmer wrote:
> On 01/01/2011 05:59 AM, Dick Holland wrote:
> > I've installed F14 on a box that was running F8 (I know, I know...) and
> > DNS is not working properly.
> ...
> > I've trawled the forums and mailing list archives and I've searched
> > Redhat bugzilla. I've seen references to 64-bit DNS problems in F10-F11,
> > but nothing still open that I can find.
> 
> You might be running into this:
> https://bugzilla.redhat.com/show_bug.cgi?id=505505
> 
> As far as I can tell, DNS won't work unless your DNS server supports 
> IPv6 (AAAA) queries.  If this sounds like your problem, I'd appreciate 
> the input.  The glibc devs have been ignoring this.
> 
> I'm not sure if dig can tell you what you need to know here.  You could 
> try "dig -t aaaa google.com" and see what you get.  Otherwise, try to 
> use "tcpdump -w /var/tmp/dns.dump -s0 port 53" to capture the DNS lookup 
> that happens when you try to connect with telnet.  Use Ctrl+C to stop 
> capturing, and then send /var/tmp/dns.dump back to the list.

Gordon, that bug report certainly looks promising, doesn't it? I'll try
those commands you suggest and post the results. I'm a bit suspicious,
though, as I have tried removing my local DNS server from the config and
using only my ISP's servers. I got exactly the same result (see my
response to Doc earlier in this thread); I guess if my ISP's DNS servers
don't support IPv6 then none of their customers can be using recent
Fedoras. 

I'll try the commands you suggested on both configs: with my DNS server
in; and with it out.


-- 
Dick Holland

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