RFC 4891 · INFORMATIONAL · 2007
WED · 29 JUL 2026
Using IPsec to Secure IPv6-in-IPv4 Tunnels
Overview
RFC 4891, “Using IPsec to Secure IPv6-in-IPv4 Tunnels”, is an Informational document published in May 2007 by R. Graveman, M. Parthasarathy, P. Savola, H. Tschofenig. The canonical text is published by the RFC Editor.
Abstract
This document gives guidance on securing manually configured IPv6-in- IPv4 tunnels using IPsec in transport mode. No additional protocol extensions are described beyond those available with the IPsec framework. 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 4891 is hosted at rfc-editor.org. Available in TXT,HTML.
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