Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt

[Lorenzo Colitti <[e-mail]>]

On 17 Aug 2017 14:08, "DaeYoung KIM" <[e-mail]> wrote:


   1. The "internal" hosts now have sub-par network connectivity that they
   cannot share any further with hosts behind them.

The /64 host in my scenario in fact now behaves as a router and distributes
/96 prefixes to internal devices. E2E connections don't terminate at the
/64 node but at /96 devices.


You said that, yes. the host gets a /64. The hosts behind it get a /96
each. Which means that the hosts behind it have worse connectivity than it
does, because they can't further extend the network (without NAT).


   1. As soon as enough hosts accept a /96 prefix length, a network
   operator that wants to limit address space can simply assign a /96 to the
   main host.

Confused.

/96 prefixes are handed out by a /64 host, not by a network operator.


This requires that hosts will accept a /96 if the network gives them one.
Thus, a network operator that wants to limit address space can simply
assign a /96 to a host. Then the host will not be able to give other hosts
behind it any /96 prefixes. So if the host wants to extend the network to
other hosts it has to use NAT.