{"draft":"draft-ietf-dnsext-rfc2671bis-edns0-10","doc_id":"RFC6891","title":"Extension Mechanisms for DNS (EDNS(0))","authors":["J. Damas","M. Graff","P. Vixie"],"format":["ASCII","HTML"],"page_count":"16","pub_status":"INTERNET STANDARD","status":"INTERNET STANDARD","source":"DNS Extensions","abstract":"The Domain Name System's wire protocol includes a number of fixed\r\nfields whose range has been or soon will be exhausted and does not\r\nallow requestors to advertise their capabilities to responders.  This\r\ndocument describes backward-compatible mechanisms for allowing the\r\nprotocol to grow.\r\n\r\nThis document updates the Extension Mechanisms for DNS (EDNS(0))\r\nspecification (and obsoletes RFC 2671) based on feedback from\r\ndeployment experience in several implementations.  It also obsoletes\r\nRFC 2673 (\"Binary Labels in the Domain Name System\") and adds\r\nconsiderations on the use of extended labels in the DNS.","pub_date":"April 2013","keywords":["DNS extensions","domain name system","resource records","opt"],"obsoletes":["RFC2671","RFC2673"],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":["STD0075"],"doi":"10.17487\/RFC6891","errata_url":"https:\/\/www.rfc-editor.org\/errata\/rfc6891"}