[dns-operations] That's a big one: MSG SIZE rcvd: 5131!

[David]

On 2016-06-13 1:16 PM, Jonathan Stewart wrote:
> Here's one even bigger. 9kB. Wow.

The biggest one I have seen recently has been 16kB. I'm sure there are a 
number of ridiculously large responses out in the wild.

>
> reaper at france:~$ dig -x 17.178.96.7
> ;; Truncated, retrying in TCP mode.
>
> ...
>
> ;; Query time: 9 msec
> ;; SERVER: 2605:e200:53:2::#53(2605:e200:53:2::)
> ;; WHEN: Mon Jun 13 14:15:45 CDT 2016
> ;; MSG SIZE  rcvd: 9228
>
>
> On Mon, Jun 13, 2016 at 1:50 PM, Jacques Latour <jacques.latour at cira.ca>
> wrote:
>
>> Apple presenting a NANOG about TCP Fast Open…
>>
>> Not relevant, but snooping around, found apple returning ;; MSG SIZE
>>  rcvd: 5131
>>
>>
>> $ dig apple.ca a +short
>> 17.142.160.7
>> 17.172.224.29
>> 17.178.96.7
>>
>>
>> $ dig -x 17.142.160.7
>> ;; Truncated, retrying in TCP mode.
>>
>> ; <<>> DiG 9.8.3-P1 <<>> -x 17.142.160.7
>> ;; global options: +cmd
>> ;; Got answer:
>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51711
>> ;; flags: qr rd ra; QUERY: 1, ANSWER: 207, AUTHORITY: 0, ADDITIONAL: 0
>>
>> ;; QUESTION SECTION:
>> ;7.160.142.17.in-addr.arpa. IN PTR
>>
>> ;; ANSWER SECTION:
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR omegamap.com.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR next.com.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR newton.com.
>> …
>> …
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR ipad.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR ipadpro.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR applephotos.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR livephotos.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR applelivephotos.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR applemusicfestival.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR applenews.rio.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR beats5.rio.
>> 77.160.142.17.in-addr.arpa. 3599 IN PTR pushpin.mobi.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR onlineapplestore.com.
>> 7.160.142.17.in-addr.arpa. 3599 IN PTR online-apple-store.com.
>>
>> ;; Query time: 3 msec
>> ;; SERVER: 192.252.241.12#53(192.252.241.12)
>> ;; WHEN: Mon Jun 13 14:42:56 2016
>> ;; MSG SIZE  rcvd: 5131
>>
>>