Hi Jürgen, all, With regards to draft-ietf-sedate-datetime-extended, we do have a related open issue about this at: https://github.com/boucadair/policy-based-network-acl/issues/74 for draft-ietf-netmod-schedule.
I think that it is better to handle this as part of the 6991-bis (rather than in a separate module). I would update the definition to align with the sedate ABNF. Cheers, Med > -----Message d'origine----- > De : netmod <[email protected]> De la part de Jürgen Schönwälder > Envoyé : jeudi 18 avril 2024 15:06 > À : Mahesh Jethanandani <[email protected]> > Cc : NETMOD Working Group <[email protected]> > Objet : Re: [netmod] AD review of draft-ietf-netmod-rfc6991-bis-15 > > > On Tue, Apr 16, 2024 at 10:08:09AM -0700, Mahesh Jethanandani wrote: > > Hi Jürgen, > > > > It appears that Brian and you had made progress on the other thread > related to IPv6 zone definition. Are there any outstanding issues that > need to be resolved? > > > > What is the plan to submit an updated version of the document? > > > > I had to take a fresh look at things and I think the discussion around > zones of IP addresses is moving to a conclusion. That said, I believe > we are not done with the work related to dates, times, and durations. > What we have is not really good and also in conflict with newer work > that came out of the sedate WG and has passed IESG approval (I think). > Here is a not so short summary (I have even more details since I did > take a look into what standard libraries of various system programming > languages offer). > > * date-and-time, date, time > > For time zones, we used to have the canonical format +00:00 for > systems in UTC located and a known timezone offset of 00:00. For > systems in UTC with an unknown timezone offset, the canonical format > has been -00:00. This was based on RFC 3339 which introduced the > -00:00 which is not strictly allowed by the ISO 8601 format. > > The sedate work is updating RFC 3339 recommending against the use of > the -00:00 notation (since it is not conforming to ISO 8601) and > instead suggests that Z is used for systems in UTC with an unknown > timezone offset. > > The question is now how we deal with this non-backwards compatible > change of RFC 3339 that apparently got approved by the IESG and > hence there is believe that the Internet won't break based on the > argument that using Z instead of -00:00 is already common practice. > If so, do we simply align our definition with the updated version of > RFC 3339? Or do we go an deprecate date-and-time and create a new > definition (and then we deal with the updates of all affected > modules over time)? > > Note that this also affects the newly defined zoned types date and > time. > > Looking forward, we may even want to consider supporting formats > that allow for timezone names instead of only static numeric > offsets. So another option might be to leave date-and-time as is > (potentially deprecating it once there is a better replacement) and > to start a new module, say ietf-chrono, that defines new date and > time related types that are aligned with the updated RFC 3339 and > the work done by the sedate working group to enable the use of time > zone names. > > * nanoseconds, microseconds, milliseconds, seconds, minutes, hours > > There was some discussion around the choice of signed vs unsigned > base types and the choice between 32 and 64 bits. I have > investigated a bit what standard libraries of system programming > languages do and I concluded that using signed integer types > dominates and that we should use 64-bit types for everything up > to and including seconds (and not offer 32-bit alternatives). > > It is easy to range restrict to just positive numbers and it is > also easy to range restrict to use less than 64 bits. > > If we would start a new module for date and time types, then these > definitions should likely be moved there as well. > > I believe to have proper types for data and time and durations, it is > best to factor this work out into a separate effort. This gives us > more freedom to do things right without any harm on backwards > compatibility (we would not change date-and-time, except perhaps > adding a warning note that use of -00:00 is getting discouraged). > > /js > > -- > Jürgen Schönwälder Constructor University Bremen gGmbH > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > > _______________________________________________ > netmod mailing list > [email protected] > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww. > ietf.org%2Fmailman%2Flistinfo%2Fnetmod&data=05%7C02%7Cmohamed.boucadai > r%40orange.com%7Cf6a1137e0ba34522105f08dc5fa85411%7C90c7a20af34b40bfbc > 48b9253b6f5d20%7C0%7C0%7C638490423774715463%7CUnknown%7CTWFpbGZsb3d8ey > JWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7 > C%7C%7C&sdata=HBu%2Bm9zCbDl%2Bo%2Fy%2B%2Bno7nhVn%2FcTMofvz%2B2b%2FHyEm > E1s%3D&reserved=0 ____________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. 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