Re: New I-D Submitted (Re: Newbie Question about addressing impacts)

Iljitsch van Beijnum <[email protected]> Fri, 22 Oct 2004 14:41:53 +0200
Newsgroups gmane.ietf.multi6
Message-ID <[email protected]>
On 15-okt-04, at 11:01, Arifumi Matsumoto wrote:

> In short, in our model, ISPs provide Source Address Selection
> Policies as well as Prefix Delegation Info by DHCP.
> The consumer edge router receives those policies (from
> multiple ISPs) and re-distribute them to end nodes.
> End nodes put them into policy table, which leads to
> appropriate source address selection.

> http://www.nttv6.net/~arifumi/draft-arifumi-multi6-sas-policy-dist 
> -00.txt

Hm, I'm worried about the policy information becoming too extensive to  
fit comfortably in DHCP or RA packets. I guess it would be possible to  
broadcast basic policy information this way and then create a cache of  
more specific information on-demand, e.g. when ICMP messages come in.

(The advantage of using RA here is that when connectivity changes, a  
lot of hosts can be informed quickly about a new policy.)

> http://www.nttv6.net/~arifumi/draft-arifumi-ipv6-nd-source-address- 
> selection-opt-00.txt
> http://www.nttv6.net/~arifumi/draft-hirotaka-dhc-source-address- 
> selection-opt-00.txt

Why must the padding be ones? On many systems, newly allocated memory  
is filled with zeros, so this would be easier. And then there's  
tradition.  :-)