RFC 5954: Essential Correction for IPv6 ABNF and URI Comparison in RFC 3261

Publisher

IETF / RFC Editor

URL

https://www.rfc-editor.org/rfc/rfc5954.html

Published

2010-08-01

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

IETF Trust Legal Provisions; no-redistribution; short excerpts and locators only

Source notes citing this source

• RFC 5954 (August 2010) updates RFC 3261 by replacing SIP's flawed IPv6 address ABNF with the RFC 3986 grammar, which removes the extra-colon bug that allowed forms such as [2001:db8:::192.0.2.1]. in context
• Per RFC 5954, two SIP URIs whose host parts are different text forms of the same IPv6 address match, because the comparison uses the binary address rather than the text. in context

Cite this source record

APA

WarmTransfer. (2010, August 1). RFC 5954: Essential Correction for IPv6 ABNF and URI Comparison in RFC 3261. WarmTransfer. https://warmtransfer.net/knowledge/sources/rfc-5954-sip-ipv6-abnf

BibTeX

@misc{warmtransfer-rfc-5954-sip-ipv6-abnf,
  title  = {RFC 5954: Essential Correction for IPv6 ABNF and URI Comparison in RFC 3261},
  author = {{WarmTransfer}},
  year   = {2010},
  url    = {https://warmtransfer.net/knowledge/sources/rfc-5954-sip-ipv6-abnf},
  note   = {IETF / RFC Editor, accessed 2026-10-02}
}