"Design document for Detecting Network Attachment in IPv6 Networks (DNAv6 Design)", Sathya Narayanan, James Kempf, Erik Nordmark, Brett Pentland, JinHyeock Choi, Greg Daley, Nicolas Montavont, 11-Jul-08. ( bytes)

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 was developed for detection of network attachement is documented for future reference. This memo is an informational document and thus does not define a new standard. The mechanism proposed in this informational RFC 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.

"Tentative Options for Link-Layer Addresses in IPv6 Neighbour Discovery", Greg Daley, Erik Nordmark, 13-Jul-08. ( bytes)

The proposed IPv6 Duplicate Address Detection (DAD) Optimization "Optimistic DAD" defines a set of recoverable procedures which allow a node to make use of an address before DAD completes. Essentially, Optimistic DAD forbids usage of certain Neighbour Discovery options which could pollute active neighbour cache entries, while an address is tentative. This document defines a new option and procedures to replace cache polluting options, in a way which is useful to tentative nodes. These procedures are designed to be to backward compatible with existing devices which support IPv6 Neighbour Discovery.

"Simple procedures for Detecting Network Attachment in IPv6", Suresh Krishnan, Greg Daley, 3-Nov-08. ( bytes)

Detecting Network Attachment allows hosts to assess if its existing addressing or routing configuration is valid for a newly connected network. This document provides simple procedures for detecting network attachment in IPv6 hosts, and procedures for routers to support such services.

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