A new Request for Comments is now available in online RFC libraries. RFC 7766 Title: DNS Transport over TCP - Implementation Requirements Author: J. Dickinson, S. Dickinson, R. Bellis, A. Mankin, D. Wessels Status: Standards Track Stream: IETF Date: March 2016 Mailbox: jad@sinodun.com, sara@sinodun.com, ray@isc.org, allison.mankin@gmail.com, dwessels@verisign.com Pages: 19 Characters: 40616 Obsoletes: RFC 5966 Updates: RFC 1035, RFC 1123 I-D Tag: draft-ietf-dnsop-5966bis-06.txt URL: https://www.rfc-editor.org/info/rfc7766 DOI: http://dx.doi.org/10.17487/RFC7766 This document specifies the requirement for support of TCP as a transport protocol for DNS implementations and provides guidelines towards DNS-over-TCP performance on par with that of DNS-over-UDP. This document obsoletes RFC 5966 and therefore updates RFC 1035 and RFC 1123. This document is a product of the Domain Name System Operations Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC