[dhcwg] Re: [v6ops] Re: [IPv6]Re: Android now su pports DHCPv6 PD

On 17/09/2025, 01:36, "Lorenzo Colitti" <[email protected]> wrote:

On Wed, 17 Sept 2025, 09:17 Mark Smith, <[email protected]<mailto:[email protected]>> wrote:
If but anyone had warned of this outcome before.

If you're worried about IPv6 address space running out, you might want to have a look at the original IPv6 proposal in RFC 8507, which proposed a 64 bit address space.

There's no need to look at history here. We can just observe that all cellular networks assign two or more /64s to every device by default, all the time. That is the industry standard and was strongly argued for by the IETF when mobile operators originally designed the standards to assign only a single /128 per device.

Why RIPE would have a policy that allows cellular networks to provide multiple /64s per device but doesn't allow, say, enterprise networks to do the same seems somewhat arbitrary and unfair. After all, both of these are IETF-standard deployment models.

Well, “RIPE” is just a community of people, that could redefine/clarify that policy to reflect modern reality.

As an NREN advocating campuses deploy IPv6, we have to justify giving more than a /48 to an organisation, and if DHCP-PD isn’t acceptable then those organisations will need to look at LIR status.  That’s not currently an expensive proposition, in the grand scheme of university finances.  An NREN can route such LIR space alongside assignments from its own space, as we do.

Tim

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