Re: IPv6 NAT-PT

Hi Petr,

Well in fact I was using your blog entry for my configuration - very helpful.

It's working now after turning off the service - thanks a bunch. I
had tried a debug ipv6 nat packet detail and looked at statistics but
never got an indication that certain queries were just being silently
dropped.

Rgds,
Rich

On Thu, Dec 31, 2009 at 4:57 PM, Petr Lapukhov
<petr_at_internetworkexpert.com> wrote:
> Hi Rich,
>
> Try the "no ipv6 nat service dns" command, which should disable the DNS ALG.
> Not sure what is your IPv6 NAT-PT configuration is, but i had a blog post
> with a sample scenario:
> http://blog.internetworkexpert.com/2008/04/18/understanding-ipv6-nat-pt/ if
> that could help.
>
> HTH,
>
> Petr Lapukhov
>
>
> ----- Original Message -----
> From: nilsi2002_at_gmail.com
> Sent: Fri, January 1, 2010, 12:51 AM
> Subject: IPv6 NAT-PT
>
> Hi,
>
> I have a requirement to test a server using it's ipv6 interface for
> DNS querying. The DNS server is ipv4 and has mostly ipv4 data and A
> records. This seemed like a good opportunity to try out NAT-PT.
>
> It seems that there is a built-in ALG which recognizes the DNS and
> converts A queries to AAAA. Some packets are converted and some are
> (silently) dropped. Is there some way to disable the ALG or another
> method of some simple static ipv6ipv4 Natting on the transport layer
> only?
>
> Router 2851 12.4T
>
> Thnks
> Rich
>
>
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Received on Thu Dec 31 2009 - 18:05:29 ART