[LINK] IPv6 doomed
gdt at gdt.id.au
Mon Aug 25 21:41:09 EST 2008
Scott Howard wrote:
> Will ISP's give customers 1 address, or an entire /56? Will the ISP do DHCP
> for multiple CPE devices, will they use IPv6 auto-configure, or neither?
> Tunnelled or native? Persistent IP addresses, or not? etc, etc...
/64, so that autoconf works. Stateless DHCP6 so that the ISP
doesn't need to grow DHCP servers with the number of customers.
DNS servers on the well-known anycast addresses, ditto NTP,
those are the addresses served up by stateless DHCP6.
Native packets, delivered over PPPOE. Using IPv6-over-IPv4 somewhat
misses the point.
Dynamic addressing, as this allows simple fail-over of customers from
one BRAS to another. In fact the main BRAS and its backup can advertise
simultaneously to the customer subnet, allowing instant failover.
It's all obvious once you've played with IPv6 a little bit. It just
seems to me that people at vendors and most ISPs have left this to
the last moment. One good point made at AusNOG was the lack of lobbying
of government by some ISP industry body of government to enforce some
IPv6 adoption. The banks manage to do this (thus BASEL2 accounting
standards, etc) and so to many other industries.
Our government communications regulator seems to lack the experience
to back itself -- and seems deeply scarred by the OSI fiasco where
they lacked experience and mistakenly backed themselves. Now they
are committing the reverse error (and not just with IPv6, but with
on-island peering of Australia's major ISPs).
Glen Turner <http://www.gdt.id.au/~gdt/>
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