File formats:

Status:

BEST CURRENT PRACTICE

Updates:

RFC 2782, RFC 3263, RFC 3529, RFC 3620, RFC 3832, RFC 3887, RFC 3958, RFC 4120, RFC 4227, RFC 4386, RFC 4387, RFC 4976, RFC 5026, RFC 5328, RFC 5389, RFC 5415, RFC 5518, RFC 5555, RFC 5617, RFC 5679, RFC 5766, RFC 5780, RFC 5804, RFC 5864, RFC 5928, RFC 6120, RFC 6186, RFC 6376, RFC 6733, RFC 6763, RFC 7208, RFC 7489, RFC 8145

Author:

D. Crocker

Stream:

IETF

Source:

dnsop (ops)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC8553

Discuss this RFC: Send questions or comments to the mailing list dnsop@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 8553

Abstract

Using an underscore for a prefix creates a space for constrained interoperation of resource records. Original uses of an underscore character as a domain node name prefix were specified without the benefit of an IANA registry. This produced an entirely uncoordinated set of name-creation activities, all drawing from the same namespace. A registry for these names has now been defined by RFC 8552. However, the existing specifications that use underscored naming need to be modified in order to be in line with the new registry. This document specifies those changes. The changes preserve existing software and operational practice, while adapting the specifications for those practices to the newer underscore registry model.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.