RFC 7126 · BEST CURRENT PRACTICE · 2014
WED · 29 JUL 2026
Recommendations on Filtering of IPv4 Packets Containing IPv4 Options
Overview
RFC 7126, “Recommendations on Filtering of IPv4 Packets Containing IPv4 Options”, is a Best Current Practice document published in February 2014 by F. Gont, R. Atkinson, C. Pignataro. The canonical text is published by the RFC Editor.
Abstract
This document provides advice on the filtering of IPv4 packets based on the IPv4 options they contain. Additionally, it discusses the operational and interoperability implications of dropping packets based on the IP options they contain.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
Read this RFC
The canonical text of RFC 7126 is hosted at rfc-editor.org. Available in TXT,HTML.
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