Re: Prefix delegation based on standard IPv6 ND messaging

[Brian Haberman <[e-mail]>]

Hi Fred,
     Would be curious about views as to how this approach differs
significantly from previous attempts to create a non-DHCP-based prefix
delegation protocol.

https://tools.ietf.org/html/draft-kaiser-nd-pd-01
https://tools.ietf.org/html/draft-bykim-ipv6-hpd-01
https://tools.ietf.org/html/draft-haberman-ipngwg-auto-prefix-02

None of those are mentioned in your draft.

Regards,
Brian

On 9/26/18 3:54 PM, Templin (US), Fred L wrote:
> Hi, we have come up with a "new" way of coordinating prefix delegation without
> DHCPv6 messaging and without requiring any new IPv6 ND options nor modifications
> to existing options or messages. The method applies only to environments where a
> node has been administratively assigned an IPv6 prefix by the administrative authority
> for the network. The prefix length must also be the same (e.g., /56, /60, etc.) for all
> nodes that connect to the network.
> 
> Given the above requirements, the node can insert its network prefix into the
> IPv6 source address of a Router Solicitation (RS) using the AERO address format.
> In this format, if the node holds the prefix 2001:db8:1:2::/64 then the corresponding
> AERO address is fe80::2001:db8:1:2. The node then sends the RS to either the
> all-routers multicast address or to the unicast address of a specific router.
> 
> When the router(s) receives the RS message, it first determines the node's
> authority to use its claimed prefix. The router(s) then injects the prefix
> 2001:db8:1:2/64 into the routing system and returns an RA message to
> the node.
> 
> When the node receives the RA message, it uses the default router lifetime
> as the time before which it must perform an additional RS/RA message in
> order for the network to retain its routing state. Everything is coordinated
> by standard RS/RA messaging.
> 
> This system is documented in Section 4 of the following document:
> 
> https://datatracker.ietf.org/doc/draft-templin-6man-dhcpv6-ndopt/
> 
> We are interested in receiving your comments.
> 
> Fred
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