Re: DNS & IPv6

Henrik Nordström wrote:
> sön 2010-05-23 klockan 15:23 +0200 skrev Kinkie:
>>>> Do the two lookups by some reason need to be in separate queries?
>>>> Can't we just ask for the A and AAAA in the same query packet?
>>>> Sorry for my ignorance..
>>> I wonder how many resolvers will actually handle both queries in the
>>> same request...
>> No idea. I guess it depends on how magic AAAA is..
>
> Ran a quick test and it seems that bind rejects requests with more than
> one query with RCODE 1 "Format error".
>
> A little digging finds this bind code:
>
> 5223 /*
> 5224 * Check for multiple question queries, since edns1 is dead.
> 5225 */
> 5226 if (message->counts[DNS_SECTION_QUESTION] > 1) {
> 5227 query_error(client, DNS_R_FORMERR, __LINE__);
> 5228 return;
> 5229 }
>
>
> Not entirely sure this is intentional, but at least effectively stops
> any attempts at using DNS requests with multiple queries.
>
> Regards
> Henrik
>

Bugger. Filed a bug with them?

Amos

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