[DNSOP] Re: [v6ops] Re: Re: Re: Re: Moving DNS64 (RFC6147) to Internet Standard

["[e-mail]" <[e-mail]>]

Hi Brian,

I think almost every protocol can be harmful if incorrectly implemented or deployed … what we may improve in every protocol (and in the case of DNS64) is an applicability statement, how is best implemented/deployed, etc.

What Mark indicates here, if I got it correctly, is in part related to DNS deployment in general and in the previous email to RFC1918 addresses. Being fixed already.

Saludos,
Jordi

@jordipalet


> El 15 abr 2026, a las 0:18, Brian E Carpenter <[e-mail]> escribió:
> 
> It seems to me that we need a draft on "DNS64 Considered Harmful".
> 
> Regards/Ngā mihi
>   Brian Carpenter
> 
> On 15-Apr-26 09:20, Mark Andrews wrote:
>> Continuing on:
>> I was using my iPhone as a hot spot and tests that just work when normally work just started falling.  This is all because people interfere with address lookups. We have decades of complaints about people interfering with address lookups.  There was the whole Site Finder snafu.
>> DNS64 “appears” to work because there are still not a lot of zones that are signed and most of them also are IPv6 enabled.  Add to that all the OS vendors that have been slack in deploying DNSSEC on the devices they ship.
>> Now BIND doesn’t do DNS64 as described.  It does an approximation of it.
>> DNS64 isn’t needed anywhere. 464XLAT doesn’t needed it.  Discovery of the prefix doesn’t need it. You can just publish an ip4only.arpa zone with the correct AAAA records.
>> Figuring out how to do DNS64 correctly  automatically is impossible even ignoring DNSSEC.  You just break things.



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