]> Internet Systems Consortium

CZ ondrej@isc.org

Ops dnsop Internet-Draft This document deprecates Resource Records that are neither being used for anything meanigful nor already made obsolete by other RFCs. This document updates .

The defines couple of old resource records that are not being used, and they are causing operational problems between implementations that support them and that don't supported them due DNS compression on the wire. This document deprecates such records to allow the implementations to drop the specific support for such records.

The MB, MG, MF, MINFO, and WKS Resource Records aren't used in any existing standards, and this documents deprecates the usage. The DNS implementations compliant with this document MUST NOT implement MB, MG, MF, WKS, and MINFO Resource Records and treat them as a generic type effectively disabling the compression in those types.

This documents updates the IANA registry "Domain Name System (DNS) Parameters" (). TYPE Value Meaning Reference MB 7 a mailbox domain name (OBSOLETE) This document MG 8 a mail group member (OBSOLETE) This document MR 9 a mail rename domain name (OBSOLETE) This document WKS 11 a well known service description (OBSOLETE) This document MINFO 14 mailbox or mail list information (OBSOLETE) This document

This document has not security considerations.

The various status of implementation of MB, MG, MR, MINFO, and WKS records is already causing operational problems between DNS implementations that do implement aforementioned types and those who don't because of mandatory DNS compression on the wire. This document aims to rectify the situation by removing the support for all the DNS implementations. This should not cause any operational problems because the records aren't actually in use on the Internet. [COMMENT: Some data?]

Peter van Dijk for poking me to write the draft. Daniel Salzman for reviewing the document.

&RFC1035;