[AusNOG] "stateless TCP" for DNS

Anand Kumria akumria at acm.org
Tue Nov 16 23:35:03 EST 2010


Hi Mark,

On Mon, Nov 15, 2010 at 5:00 AM, Mark Andrews <marka at isc.org> wrote:

>
> * Using IPv6 and DNSSEC, the DNS response will always exceed 512 Bytes.
>
> [ Which is demonstrably wrong.
>

And yet you demonstrated querying a root server over IPv4. ???


>
> ; <<>> DiG 9.6.0-APPLE-P2 <<>> +dnssec br @a.root-servers.net
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32934
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 9
> ;; WARNING: recursion requested but not available
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags: do; udp: 4096
> ;; QUESTION SECTION:
> ;br.                            IN      A
>
>
[snip]


> ;; Query time: 163 msec
> ;; SERVER: 198.41.0.4#53(198.41.0.4)
>

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^


> ;; WHEN: Mon Nov 15 15:48:59 2010
> ;; MSG SIZE  rcvd: 478
> ]
>

Anand
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