[dns-operations] CDS query issues (google issue?)

Greg Choules gregchoules+dnsops at googlemail.com
Mon Aug 21 15:30:13 UTC 2023


Now sent from the correct mail alias!

On Mon, 21 Aug 2023 at 16:28, Greg Choules <
gregchoules+bindusers at googlemail.com> wrote:

> Works fine for me using dig:
>
> ; <<>> DiG 9.18.17 <<>> ewmc.ca cds @ns-cloud-c4.googledomains.com. +tcp
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47706
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 512
> ;; QUESTION SECTION:
> ;ewmc.ca. IN CDS
>
> ;; ANSWER SECTION:
> ewmc.ca. 300 IN CDS 13687 8 2
> B10B9D6ACF05F22DFC3602DBAB830F541B8C9F0228F79D56B531F777 B8FE9AD1
>
> ;; Query time: 23 msec
> ;; SERVER: 2001:4860:4802:38::6c#53(ns-cloud-c4.googledomains.com.) (TCP)
> ;; WHEN: Mon Aug 21 16:21:21 BST 2023
> ;; MSG SIZE  rcvd: 84
>
> Please note:
> - dig is not BIND. It is a tool shipped with BIND but the two are not
> joined at the hip. In this instance, dig is being told to ask whatever "
> ns-cloud-c4.googledomains.com" resolves to, which happened to be (the way
> my OS and ISP resolved it)) 2001:4860:4802:38::6c
> - When using dig @something, please make the "something" an explicit IP
> address (v4 or v6). Otherwise dig has to ask your OS and wherever it sends
> its queries to first resolve the "something" to an IP address, which may
> not give the result you expected.
>
> Cheers, Greg
>
> On Mon, 21 Aug 2023 at 16:23, Evan McKinney <evan at evanm.nyc> wrote:
>
>> Hi Jack
>>
>> Which version of Bind being invoked is causing this error condition? Does
>> the connection die when attempting any other queries explicitly invoking
>> the +tcp ?
>>
>> -Evan
>>
>> On Aug 21, 2023, at 10:56 AM, Jacques Latour via dns-operations <
>> dns-operations at dns-oarc.net> wrote:
>>
>>
>> *From: *Jacques Latour <Jacques.Latour at cira.ca>
>> *Subject: **CDS query issues (google issue?)*
>> *Date: *August 21, 2023 at 10:56:58 AM EDT
>> *To: *"dns-operations at lists.dns-oarc.net" <
>> dns-operations at lists.dns-oarc.net>
>> *Cc: *Jesse Carter <Jesse.Carter at cira.ca>, "oliv.schacher at switch.ch" <
>> oliv.schacher at switch.ch>
>>
>>
>> Hi all,
>>
>> Quick one, we’re getting an error when doing this CDS query over TPC?
>> Just me? Seems like a google bug?
>>
>> $ dig ewmc.ca cds @ns-cloud-c4.googledomains.com. +tcp
>> netmgr/tcpdns.c:302: fatal error: RUNTIME_CHECK(result == ISC_R_SUCCESS)
>> failed
>> Aborted (core dumped)
>>
>> But works on UDP…
>>
>> $ dig ewmc.ca cds @ns-cloud-c4.googledomains.com. +notcp +short
>> 13687 8 2 B10B9D6ACF05F22DFC3602DBAB830F541B8C9F0228F79D56B531F777
>> B8FE9AD1
>>
>> Thanks,
>>
>> Jack
>>
>>
>>
>> CLASSIFICATION:PUBLIC
>>
>>
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