I think that those who believe v6 DHCP and auto-conf are sufficient to
avoid the PI or local-autonomy requirement are deluding themselves,
but one cannot prove such propositions until it is too late to prevent
the undesired outcome.
Counter-arguments?
from realworld experience in providing IPv6 services at an ISP,
and as a customer of that service:
/48 PA assignments to the customer is sufficient.
for roaming clients (like travelling laptops with PPP) there's a
different requirement.
anyone who would like to comment on this topic should better have
real experience in assigning prefixes to the customers :-P
itojun
# ipv6samurais.com: saving the world with code and sword
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