The following errata report has been submitted for RFC7816, "DNS Query Name Minimisation to Improve Privacy".
-------------------------------------- You may review the report below and at: http://www.rfc-editor.org/errata_search.php?rfc=7816&eid=4644 -------------------------------------- Type: Technical Reported by: Robert Edmonds <edmo...@mycre.ws> Section: 6 Original Text ------------- QNAME minimisation can decrease performance in some cases -- for instance, for a deep domain name (like www.host.group.department.example.com, where host.group.department.example.com is hosted on example.com's name servers). Let's assume a resolver that knows only the name servers of .example. Without QNAME minimisation, it would send these .example name servers a query for www.host.group.department.example.com and immediately get a specific referral or an answer, without the need for more queries to probe for the zone cut. For such a name, a cold resolver with QNAME minimisation will, depending on how QNAME minimisation is implemented, send more queries, one per label. Once the cache is warm, there will be no difference with a traditional resolver. Actual testing is described in [Huque-QNAME-Min]. Such deep domains are especially common under ip6.arpa. Corrected Text -------------- QNAME minimisation can decrease performance in some cases -- for instance, for a deep domain name (like www.host.group.department.example.com, where host.group.department.example.com is hosted on example.com's name servers). Let's assume a resolver that knows only the name servers of .example.com. Without QNAME minimisation, it would send these .example.com name servers a query for www.host.group.department.example.com and immediately get a specific referral or an answer, without the need for more queries to probe for the zone cut. For such a name, a cold resolver with QNAME minimisation will, depending on how QNAME minimisation is implemented, send more queries, one per label. Once the cache is warm, there will be no difference with a traditional resolver. Actual testing is described in [Huque-QNAME-Min]. Such deep domains are especially common under ip6.arpa. Notes ----- Changed ".example" to ".example.com". Instructions: ------------- This erratum is currently posted as "Reported". If necessary, please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party (IESG) can log in to change the status and edit the report, if necessary. -------------------------------------- RFC7816 (draft-ietf-dnsop-qname-minimisation-09) -------------------------------------- Title : DNS Query Name Minimisation to Improve Privacy Publication Date : March 2016 Author(s) : S. Bortzmeyer Category : EXPERIMENTAL Source : Domain Name System Operations Area : Operations and Management Stream : IETF Verifying Party : IESG _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
