Dear DNSOPers, as an operator I tend to have this need to couple an answer for a query to an auth server, with the actual "SOA zone version" used. So I think it'll be valuable to have an EDNS option for it.
Here I'm proposing it with this new draft. The 'camel index' for its implementation/hack/proof-of-concept is about 37 lines in NSD 4.1 (more details in Appendix A). I've asked some operators and they see value on it. Is there any support for adoption in DNSOP? ----- Name: draft-salgado-rrserial Revision: 01 Title: The "RRSERIAL" EDNS option for the SOA serial of a RR's zone Document date: 2020-01-27 Group: Individual Submission Pages: 5 URL: https://www.ietf.org/internet-drafts/draft-salgado-rrserial-01.txt Status: https://datatracker.ietf.org/doc/draft-salgado-rrserial/ Htmlized: https://tools.ietf.org/html/draft-salgado-rrserial-01 Htmlized: https://datatracker.ietf.org/doc/html/draft-salgado-rrserial Diff: https://www.ietf.org/rfcdiff?url2=draft-salgado-rrserial-01 Abstract: The "RRSERIAL" EDNS option allows a DNS querier to ask a DNS authoritative server to add a EDNS option in the answer of such query with the SOA serial number field of the origin zone which contains the answered resource record. This "RRSERIAL" data allows to debug problems and diagnosis by helping to recognize the origin of an answer, associating this answer with a respective zone version. ----- Best, Hugo Salgado
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