Since you invited flames...
The argument on /64 as the longest prefix is not that it is magically
unnatural.
Rather, it is that there are a number of current and evolving protocols
that depend upon that /64. The obvious example is that SLAAC does not
work if subnets are longer than /64.
The rules in this regard are written into approved RFCs. If homenet
wants to change that, it really needs to go to 6man with a strong case.
(for point-to-point inter-router links this was recently relaxed.
At the same time, andy operator who insists on giving homes a /64 is
being inappropriately restrictive. Homenet should say that, rather than
trying to change the IPv6 architecture.
Yours,
Joel
On 9/22/2012 11:30 PM, Curtis Villamizar wrote:
12. This is sure to be controversial. I pointed out that using
subnets longer than /64 is OK as long as they are not leaked
into global routing. Please read the text and changes before
exploding on this topic. It may be necessary to subnet a /64 if
that is all a provider will give you and you need subnets. It
does work and it is no more unnatural than subnetting a class-A
network would be in 1990. It means using DHCPv6 and not using
RA prefixes for GUA (otherwise SLAAC implementations would
likely try to use the whole bottom 64).
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