Hi Petr, I would say one is a subset of the other, but not exactly the same topic.
draft-moura-dnsop-negative-cache-loop focuses relatively narrowly on one type of resolution failure: delegations in a loop / cyclic dependency as documented in their TusNAME work. draft-dwmtwc-dnsop-caching-resolution-failures, on the other hand, is intended to cover resolution failures much more broadly. Based on our experience, we observe abnormal behavior in a number of different situations including outages, timeouts, server failures, validation failures, and delegation problems. We plan to present our draft at the next meeting and I assume the other authors will as well, so that will be a good chance for the working group to give us all feedback. DW > On Feb 8, 2022, at 5:28 AM, Petr Špaček <[email protected]> wrote: > > Hello everyone, > > it seems that we now have two drafts about the same topic - this new one and > draft-moura-dnsop-negative-cache-loop. > > Perhaps authors could discuss if they are in agreement and could pick one? > > Petr Špaček @ Internet Systems Consortium > > > > On 14. 01. 22 19:14, Wessels, Duane wrote: >> Dear DNSOP, >> In light of some recent events and research, we feel that it could be >> beneficial to strengthen the requirements around negative caching of DNS >> resolution failures. Please see the recently submitted Internet Draft >> referenced below and let us know if you have any feedback. >> DW >>> Begin forwarded message: >>> >>> *From: *<[email protected] <mailto:[email protected]>> >>> *Subject: **[EXTERNAL] New Version Notification for >>> draft-dwmtwc-dnsop-caching-resolution-failures-00.txt* >>> *Date: *January 13, 2022 at 1:28:00 PM PST >>> *To: *Duane Wessels <[email protected] <mailto:[email protected]>>, >>> Matthew Thomas <[email protected] <mailto:[email protected]>>, >>> William Carroll <[email protected] <mailto:[email protected]>> >>> >>> A new version of I-D, draft-dwmtwc-dnsop-caching-resolution-failures-00.txt >>> has been successfully submitted by William Carroll and posted to the >>> IETF repository. >>> >>> Name:draft-dwmtwc-dnsop-caching-resolution-failures >>> Revision:00 >>> Title:Negative Caching of DNS Resolution Failures >>> Document date:2022-01-13 >>> Group:Individual Submission >>> Pages:13 >>> URL: >>> https://secure-web.cisco.com/1-PFLv-gJPKY7IUv53FHemsD97LSSdToCXsQHAguzJmIyVR8DlgbIUfK3NQBXH-5zgoS4DQIIvAT9SMf0y632bk-kgt0veCCWPt9eqKvdmUM_8bz-jZwYAtW9vzG8Yle7Gp7sv_jeafkAwZw5L2kCkJgy4hfNVxUERJJyCxnWI88uVj_yjKi5NiJgO5ANYPWUfYKdg_SnWCnWUDLuwAgLHaD476ZKPPsK82E0W_s8SJOQoH4OGG9glsNw5_92tWYg/https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-dwmtwc-dnsop-caching-resolution-failures-00.txt >>> >>> <https://secure-web.cisco.com/1-PFLv-gJPKY7IUv53FHemsD97LSSdToCXsQHAguzJmIyVR8DlgbIUfK3NQBXH-5zgoS4DQIIvAT9SMf0y632bk-kgt0veCCWPt9eqKvdmUM_8bz-jZwYAtW9vzG8Yle7Gp7sv_jeafkAwZw5L2kCkJgy4hfNVxUERJJyCxnWI88uVj_yjKi5NiJgO5ANYPWUfYKdg_SnWCnWUDLuwAgLHaD476ZKPPsK82E0W_s8SJOQoH4OGG9glsNw5_92tWYg/https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-dwmtwc-dnsop-caching-resolution-failures-00.txt> >>> Status: >>> https://secure-web.cisco.com/1DyTvZbisHjKnPovlyhjAOtHxDAwKAqB2zXhGz5eE0Ca-1XPZAqQhDEyq-XNf1nKXr9SySf_nEWu5XQkh450f2xF3gmfQKMuLIyBqZqbYTfqZyyMbWrcyG3KqVYjmGV6dL3NSnwTn0iXcgzWvT7mLCzivYnGbpRH23V8z4fqw3ikCCp6NwxyuP8O_ak1u03fM9kH0QYTu_C1vGE3rGAn7dFkT0A4Vk3mRhgnZSlh3vhaJmDWMO1xylYlPvJBQ40Af/https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-dwmtwc-dnsop-caching-resolution-failures%2F >>> >>> <https://secure-web.cisco.com/1DyTvZbisHjKnPovlyhjAOtHxDAwKAqB2zXhGz5eE0Ca-1XPZAqQhDEyq-XNf1nKXr9SySf_nEWu5XQkh450f2xF3gmfQKMuLIyBqZqbYTfqZyyMbWrcyG3KqVYjmGV6dL3NSnwTn0iXcgzWvT7mLCzivYnGbpRH23V8z4fqw3ikCCp6NwxyuP8O_ak1u03fM9kH0QYTu_C1vGE3rGAn7dFkT0A4Vk3mRhgnZSlh3vhaJmDWMO1xylYlPvJBQ40Af/https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-dwmtwc-dnsop-caching-resolution-failures%2F> >>> Htmlized: >>> https://secure-web.cisco.com/1MtdsiBy0XYrTWaww2jsyGmhpR1_l4cfsY2lzwq4M4gkF3VU-omPqy4e66hhbK7hfsy_x0cC1ZTi4VBXdrxpcOJPQgL-NdJ6b_iqYKCiDtAXs-6A60hPQqq4UZ7C7A1iyL29ghpvCZWMAvER26fj-YW4tmLvr5avpsjTGdZZTCIzvskQ9Nn-Degm8WJ03ldm01hMS6gB7ditarcN0g-dAl6zKyLmHKLy-txj3g8mNMsKTuTmkkE7vXFX-YxgBfJel/https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-dwmtwc-dnsop-caching-resolution-failures >>> >>> <https://secure-web.cisco.com/1MtdsiBy0XYrTWaww2jsyGmhpR1_l4cfsY2lzwq4M4gkF3VU-omPqy4e66hhbK7hfsy_x0cC1ZTi4VBXdrxpcOJPQgL-NdJ6b_iqYKCiDtAXs-6A60hPQqq4UZ7C7A1iyL29ghpvCZWMAvER26fj-YW4tmLvr5avpsjTGdZZTCIzvskQ9Nn-Degm8WJ03ldm01hMS6gB7ditarcN0g-dAl6zKyLmHKLy-txj3g8mNMsKTuTmkkE7vXFX-YxgBfJel/https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-dwmtwc-dnsop-caching-resolution-failures> >>> >>> >>> Abstract: >>> In the DNS, resolvers employ caching to reduce both latency for end >>> users and load on authoritative name servers. The process of >>> resolution may result in one of three types of responses: (1) a >>> response containing the requested data; (2) a response indicating the >>> requested data does not exist; or (3) a non-response due to a >>> resolution failure in which the resolver does not receive any useful >>> information regarding the data's existence. This document concerns >>> itself only with the third type. >>> >>> RFC 2308 specifies requirements for DNS negative caching. There, >>> caching of type (1) and (2) responses is mandatory and caching of >>> type (3) responses is optional. This document updates RFC 2308 to >>> require negative caching for DNS resolution failures. >>> >>> >>> >>> >>> The IETF Secretariat > > _______________________________________________ > DNSOP mailing list > [email protected] > https://secure-web.cisco.com/19zpX2nlFp-gPK0VZMG2uiiTOI6BMpyoMtbbgEDzyI50SnGa4fn2o00VJknIEpJCeAD-SutwhS_R6D-lTdmMGapb88qgTDIj_ZienwZkTCbAAVSP51RXNGmef_YtOU0euykdEeTkMdxpWaGqkTdnomxxiTdzEeVBubXUGQyf4gNWOne_JWrQlmGQqfogJjW55mRWOq4ITBICB0dqqDmlLCAcZlACYW5HM50hrFYpSDcjXh13eDwDLkqzI2MtDxSjv/https%3A%2F%2Fwww.ietf.org%2Fmailman%2Flistinfo%2Fdnsop _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
