A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : IPv6 Prefix Delegation using ICMPv6
Author(s) : S. Rao, et al.
Filename : draft-rao-ipv6-prefix-delegation-01.txt
Pages : 15
Date : 2007-2-21
The currently proposed solution for IPv6 Prefix Delegation is based
on DHCPv6 protocol. We believe that in certain network topologies
and configurations where the CPE routers may not be capable or
configured to use DHCPv6 and hence can not utilize the currently
proposed DHCPv6 based ipv6 prefix delegation procedure. Therefore an
alternate ipv6 prefix delegation procedure that does not require or
depend on the DHCPv6 protocol is needed.
This document proposes an ICMPv6 based prefix delegation (PD)
mechanism which is in conformance with RFC 3769 that describes the
requirements for IPv6 prefix delegation. This proposal involves
using the Router Solicitation (RS) message for the prefix request and
the Router Advertisement(RA) message for the prefix delegation.
A new flag called P-flag (bit 0 of the reserved field) is defined to
indicate that the RS message includes a PD request. RS messages with
PD request can now include PIO option(s) to carry PD information such
as prefix preference(s) or PD parameters such as lease etc.
It also proposes defining a new flag called D-flag (reserved bit 26)
of the PIO option to indicate the presence of PD specific PIO in RS
and RA messages.
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