Why used DHCPv6 when RA has RDNSS and DNSSL?

Lorenzo Colitti lorenzo at google.com
Thu Apr 2 11:11:48 CEST 2020


On Thu, Apr 2, 2020 at 2:16 AM Gert Doering <gert at space.net> wrote:

> Think "enterprise networks".  You have LANs, and members of those
> networks.  Not "distribution machinery for arbitrary prefixes to be
> doled out in places where you have no idea how many subnets of which
> size you might need".
>

It doesn't need to be arbitrary-size or hierarchical. The only thing that
is needed is to assign a /64 IPv6 prefix in every case where the network
assigns a /32 IPv4 address via DHCPv4 (or would assign a /128 IPv6 address
via IA_NA).
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