[DragonFlyBSD - Bug #3294] (New) drill(1) with IPv6 NS fails with UDP but works with TCP

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #3294 has been reported by liweitianux.

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Bug #3294: drill(1) with IPv6 NS fails with UDP but works with TCP
http://bugs.dragonflybsd.org/issues/3294

* Author: liweitianux
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 6.2
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YONETANI Tomokazu reported this issue on users@ mailing list: https://lists.dragonflybsd.org/pipermail/users/2021-August/404805.html

<pre>
$ drill  @2001:4860:4860::8888 aaaa leaf.dragonflybsd.org | egrep -v
'^(\;|$)'
Error: error sending query: Could not send or receive, because of network
error
</pre>

unless using TCP query:

<pre>
$ drill -t @2001:4860:4860::8888 aaaa leaf.dragonflybsd.org | egrep -v
'^(\;|$)'
leaf.dragonflybsd.org. 3599 IN AAAA 2001:470:1:43b:1::68
</pre>

Similar DNS queries on other boxes running different OSes don't have the same problem, and tcpdump output shows the response from the DNS server, so I doubt it's an network issue.

<pre>
$ uname -a
DragonFly c60 6.0-RELEASE DragonFly v6.0.0.33.gc7b638-RELEASE #0: Wed Aug 4
20:25:25 JST 2021 root at c60:/usr/obj/build/usr/src/sys/X86_64_GENERIC x86_64
</pre>

----

I also confirmed this issue on leaf, which running master as of Aug 4.



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