[dns-operations] How should work name resolution on a modern system?

Viktor Dukhovni ietf-dane at dukhovni.org
Wed Jun 15 20:28:41 UTC 2022


On Wed, Jun 15, 2022 at 01:33:51PM -0400, Dave Lawrence wrote:

> Viktor Dukhovni writes:
> > Single label names passed to getaddrinfo(3) should not result in single
> > label "A" or "AAAA" DNS queries.
> 
> http://ai./

Well aware of it, and that's why I wrote "worst case you'll actually get
an answer".  The A/AAAA records for "ai" were/are a bad idea.

> Kind of surprising to me the number of TLDs who report their address
> as 127.0.53.53:
> 
> .arab
> .cpa
> .kids
> .music
> .xn--mxtq1m (Chinese: "government")
> .xn--ngbrx (Urdu: "Arab")

And you'll see more detail with an SRV query:

    arab. IN SRV 10 10 0 your-dns-needs-immediate-attention.arab.

-- 
    Viktor.


More information about the dns-operations mailing list