ftp.perl.org strangeness
Mark Andrews
Mark_Andrews at isc.org
Mon Mar 22 13:14:48 PST 2004
>
> On Mar 15, 2004, at 11:55 PM, Dave Hart wrote:
>
> (Dave, I'm not subscribed to freebsd-stable currently - if the list
> isn't open for non-subscribers and you find it appropriate can you
> forward this mail there?)
>
> > I've run across this issue with a few websites in the last 18 months.
> > It might help to ask if they're using a "load balancer" on
> > ddns5.develooper.com (the nameserver for ddns.develooper.com which is
> > the zone containing ftp.cpan.ddns.develooper.com which is CNAMEd from
> > ftp.perl.org).
>
> Yes indeed, it is using a "load balancer"[1]. The old code was a
> several years old quick hack on ancient ancient code. I re-implemented
> it this sunday and got rid of the AAAA -> nxdomain bug.
>
> There's still a nameserver running with the old code. If the new code
> doesn't exhibit any problems in the next day or two I'll upgrade the
> last old one too.
>
> The new code is running on ns2.geo.bitnames.com if you want to look the
> responses over.
>
> dig ftp.cpan.ddns.develooper.com @ns2.geo.bitnames.com
> dig -t aaaa ftp.cpan.ddns.develooper.com @ns2.geo.bitnames.com
>
> (thanks to Dave Hart, Mark Andrews and Vivek Khera for making me aware
> of this thread).
I suggest that you look at RFC 2308. You are returning a
self referral to the AAAA query. ns2.geo.bitnames.com will
be marked as lame.
Most authoritative servers return a TYPE 2 response.
> - ask
>
> [1] it returns a mirror in your country if available.
>
> --
> http://www.askbjoernhansen.com/
>
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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