RFC 2921 · INFORMATIONAL · 2000
WED · 29 JUL 2026
6BONE pTLA and pNLA Formats
Overview
RFC 2921, “6BONE pTLA and pNLA Formats”, is an Informational document published in September 2000 by B. Fink. The canonical text is published by the RFC Editor.
Abstract
This memo defines how the 6bone uses the 3FFE::/16 IPv6 address prefix, allocated in RFC 2471, "IPv6 Testing Address Allocation", to create pseudo Top-Level Aggregation Identifiers (pTLA's) and pseudo Next-Level Aggregation Identifiers (pNLA's). This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 2921 is hosted at rfc-editor.org. Available in TXT,HTML.
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