Add NXNAME RR type and invalid query type EDE

[mworsley-cloudflare]

Adding NXNAME resource record type and the EDE code to reject invalid queries for it
EDE 30 and NXNAME are both IANA reserved

[Philip-NLnetLabs]

Did something go wrong? IANA class it 'NXNAME', the PR seems to have NXDOMAIN?

[mworsley-cloudflare]

Did something go wrong? IANA class it 'NXNAME', the PR seems to have NXDOMAIN?

You're 100% right, it should be NXNAME to match the IANA reserved

[mworsley-cloudflare]

Hi there, is there anything else the team would like out of this PR?

[ximon18]

I notice that https://datatracker.ietf.org/doc/draft-ietf-dnsop-compact-denial-of-existence/ has not yet finished moving through the IETF process nor has the RFC been updated yet to reflect the new IANA EDE code point. Given that the IANA code point has now been allocated (at least it appears at https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#extended-dns-error-codes) I assume it is low risk to merge this PR while the IETF process is ongoing.

[mworsley-cloudflare]

I notice that https://datatracker.ietf.org/doc/draft-ietf-dnsop-compact-denial-of-existence/ has not yet finished moving through the IETF process nor has the RFC been updated yet to reflect the new IANA EDE code point. Given that the IANA code point has now been allocated (at least it appears at https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#extended-dns-error-codes) I assume it is low risk to merge this PR while the IETF process is ongoing.

This is our assumption as well given that they've been allocated, in the small chance that anything changes I'll be back

[Chreo]

https://datatracker.ietf.org/doc/draft-ietf-dnsop-compact-denial-of-existence/ is in the final stages for RFC publication and while that may still result in changes to the final document, the allocation of the NXNAME type and the new EDE code is not going to be changed so is safe to import. IANA does not have a habit of changing allocated types meaning that worst case the allocated code point is burned and considered deprecated in the future.
Anything marked as allocated on https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml can be considered stable and not subject to rash changes.
It would be very useful to get this merged.