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Use of IP Router Alert Considered Dangerous

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors David Ward , Reshad Rahman
Last updated 2008-10-17
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document provides guidelines to address security concerns which arise with the use of IP Router Alert option [RFC2113] and [RFC2711]. RSVP,[RFC2205] and [RFC3209], and IGMP [RFC3376] are some of the protocols which make use of the IP Router Alert option. IP datagrams carrying the Router Alert option are usually examined in a router's "slow path" and an excess of such datagrams can cause performance degradation or packet drops in a router's "slow path".


David Ward
Reshad Rahman

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)