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This draft is a work item of the Detecting Network Attachment Working Group of the IETF.
Title : Detecting Network Attachment in IPv6 Networks (DNAv6)
Author(s) : J. Kempf
Filename : draft-ietf-dna-protocol-06.txt
Pages : 47
Date : 2007-6-26
Efficient detection of network attachment in IPv6 needs the following
three components: a method for hosts to detect link change in the
presence of unmodified (non-DNAv6) routers, a method for the host to
query routers on the link to identify the link (Link Identification)
and a method for the routers on the link to consistently respond to
such a query with minimal delay (Fast RA). Solving the link
identification based strictly on RFC 2461 is difficult because of the
flexibility offered to routers in terms of prefixes advertised in a
router advertisement (RA) message. Similarly, the random delay in
responding to router solicitation messages imposed by RFC 2461 makes
it difficult to receive an RA quickly. In this memo, a mechanism
that requires the hosts to monitor all the prefixes advertised on the
link and use it for link identification in the presence of non-DNAv6
routers is presented. A more efficient link-identification mechanism
requiring the DNAv6 routers to monitor the link for advertised
prefixes to assist the hosts in link identification combined with a
fast router advertisement mechanism that selects the order of
response for the router deterministically is also presented.
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