Re: IPv6 troubleshooting help needed
Hello,
That is it! Thanks a lot!
I disabled the dns relay function at the Dlink DSL-2640T and now my home Debian
machine can update using security.debian.org and volatile.debian.org that
changed to ipv6 addresses some days ago.
I will submit a bug report to Dlink site.
But what still really worries me is how to exactly track, prove and demonstrate,
that the problem at company is some kind of error at dns caching.
As a country wide, servicing multiple agencies, I guess it is using some high
end network hardware and some kind of software and security infrastructure.
I *must* have 100% demonstrable, 100% sure, log and or report to submit a ticket
to their net/security teams.
What commands could prove and register the dns caching problem at their network?
Also, it have layers of ips, ids, routers, swithches, firewalls, etc, and
something in that setup could also be causing the problem.
Suggestions?
Regards.
Andre Felipe
Luca Bruno wrote ..
> Andre Felipe Machado scrisse:
>
> > Hello, Stephen
> > At the end of email, you could find the command output.
>
> That is an ipv4 connections not going well, isn't it? Why are you
> talking about ipv6?
>
> > It may be useful to add some information.
> > Yesterday I tried update at another location, with other adsl modem
> > (an old USR 9001), but at same adsl isp (www.gvt.com.br). It was
> > successful. My home adsl connection to the same isp is made using a
> > new Dlink DSL-2640T adsl modem router wifi, that may affect the ipv6
> > connection.
>
> Out of the mind, you could be experiencing something similar to
> http://blog.bofh.it/id_202 (which, if you can't read Italian, is
> basically your modem doing DNS-caching badly) which already happened on
> some other Dlink modems.
>
> Can you please check to which IP are your packets trying to go? (eg.
> via dig, ping and traceroute).
>
> Ciao, Luca
>
> --
> .''`. ** Debian GNU/Linux ** | Luca Bruno (kaeso)
> : :' : The Universal O.S. | lucab (AT) debian.org
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