A new Request for Comments is now available in online RFC libraries.

        RFC 3378

        Title:      EtherIP: Tunneling Ethernet Frames in IP Datagrams
        Author(s):  R. Housley, S. Hollenbeck
        Status:     Informational
        Date:       September 2002
        Mailbox:    rhousley@rsasecurity.com, shollenbeck@verisign.com
        Pages:      9
        Characters: 18803
        Updates/Obsoletes/SeeAlso:  None

        I-D Tag:    draft-housley-etherip-04.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3378.txt

This document describes the EtherIP, an early tunneling protocol, to
provide informational and historical context for the assignment of IP
protocol 97.  EtherIP tunnels Ethernet and IEEE 802.3 media access
control frames in IP datagrams so that non-IP traffic can traverse an
IP internet.  The protocol is very lightweight, and it does not
provide protection against infinite loops.

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