I'm gonna be "that guy" though for a minute.
If there are any IPv6 only mail servers, they are hobbyists trying to
prove a point. There are a ton of IPv4 only mail servers. In short,
there is no benefit to sending mail over IPv6 beyond the ideological
preference some people have for feeling like they're ushering in the
future. A future they've been predicting would arrive any day now for
well over a decade.
On 2024-03-16 11:44, Bill Cole via mailop wrote:
On 2024-03-14 at 20:26:00 UTC-0400 (Thu, 14 Mar 2024 17:26:00 -0700)
Jay Hennigan via mailop <mailop-l...@keycodes.com>
is rumored to have said:
On 3/14/24 15:18, Michael Grimm via mailop wrote:
OVH is sharing a /64 subnet among multiple customers since they
started their public cloud project. You are only provided with a
single IPv6 address for your instance. In the years before that, I
had had access to an exclusive /64 subnet.
This is very bad practice on OVH's part. Why are they doing this? Are
they afraid of running out of IPv6 addresses?
Unlikely.
They are afraid of running out of the scarcity that allows them to make
money by hoarding addresses and selling the clean ones at a premium.
Proper IPv6 deployment by mass-market hosters and ISPs is an attack on
their business models. It is, in a sense, anti-capitalist in that it
eliminates any meaningful address scarcity and so eliminates the
profitable market for usable addresses.
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