Conflicting glue records?

Wolfgang S. Rupprecht wolfgang.rupprecht+bindu at gmail.com
Fri Jan 23 21:12:53 UTC 2009


> For someone to "register a domain and listing our server name with a
> bogus IP", the registry has to be incredibly careless

I wonder if he is seeing the same thing I was a few days ago.  I had a
certain *.edu host listed as a nameserver of mine with several
registries (gandi for .com, arin for in-addr.arpa and nro for rDNS in
2002:: space.)  Last friday mail stopped flowing from my machine to
this nameserver because someone was injecting a stale A-record into
gtld-servers.net (the address injected was formerly correct, but
changed over a year ago).  This record either hadn't appeared before
or my bind ignored it up to this point.  Could something have changed
with bind 9.5.1-P1 that would cause it to put more value on glue/host
records than it did before?

This command clearly showed an A-record with an old, now incorrect
ipv4 address.

        dig mgm.mit.edu @a.gtld-servers.net a
        

As a quick fix I dropped the nameserver in question from gandi and nro
(arin is still in the stone age and wants you to be their pen-pal, so
nothing has been changed there.)  The problem seems to have fixed
itself within 24 hours of making the changes at the two registries
mentioned.

Weird huh?

-wolfgang
-- 
Wolfgang S. Rupprecht              http://www.full-steam.org/  (ipv6-only)
         You may need to config 6to4 to see the above pages.



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