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        RFC 2113:

        Title:      IP Router Alert Option
        Author:     D. Katz
        Date:       February 1997
        Mailbox:    dkatz@cisco.com
        Pages:      4
        Characters: 7924
        Updates/Obsoletes: None

        URL:        ftp://ds.internic.net/rfc/rfc2113.txt

This memo describes a new IP Option type that alerts transit routers
to more closely examine the contents of an IP packet.  This is useful
for, but not limited to, new protocols that are addressed to a
destination but require relatively complex processing in routers along
the path. 

This is now a Proposed Standard Protocol.

This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements.  Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state and
status of this protocol.  Distribution of this memo is unlimited.

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Joyce K. Reynolds and Mary Kennedy
USC/Information Sciences Institute