SHALL and MUST are the same according to RFC 2119. -- Mark Andrews > On 27 Feb 2026, at 17:28, RFC Errata System <[email protected]> wrote: > > The following errata report has been submitted for RFC9460, > "Service Binding and Parameter Specification via the DNS (SVCB and HTTPS > Resource Records)". > > -------------------------------------- > You may review the report below and at: > https://www.rfc-editor.org/errata/eid8787 > > -------------------------------------- > Type: Technical > Reported by: Ulrich Windl <[email protected]> > > Section: 2.2 > > Original Text > ------------- > (...) > SvcParamKeys SHALL appear in increasing numeric order. > > Clients MUST consider an RR malformed if: > > the end of the RDATA occurs within a SvcParam. > SvcParamKeys are not in strictly increasing numeric order. > (...) > > Corrected Text > -------------- > (...) > SvcParamKeys MUST appear in increasing numeric order. > > Clients MUST consider an RR malformed if: > > the end of the RDATA occurs within a SvcParam. > SvcParamKeys are not in strictly increasing numeric order. > (...) > > Notes > ----- > The protocol will only be successful if the DNS server must provide the > SvcParamKeys in increasing numeric order, because the client will consider > them malformed otherwise. > Usually the principle "be strict what you send, but be liberal in what you > accept" seems reversed here. > > Instructions: > ------------- > This erratum is currently posted as "Reported". (If it is spam, it > will be removed shortly by the RFC Production Center.) Please > use "Reply All" to discuss whether it should be verified or > rejected. When a decision is reached, the verifying party > will log in to change the status and edit the report, if necessary. > > -------------------------------------- > RFC9460 (draft-ietf-dnsop-svcb-https-12) > -------------------------------------- > Title : Service Binding and Parameter Specification via the DNS > (SVCB and HTTPS Resource Records) > Publication Date : November 2023 > Author(s) : B. Schwartz, M. Bishop, E. Nygren > Category : PROPOSED STANDARD > Source : Domain Name System Operations > Stream : IETF > Verifying Party : IESG > > _______________________________________________ > DNSOP mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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