<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Of possible relevance to this discussion: <a href="https://blog.apnic.net/2024/10/22/the-ipv6-transition/">https://blog.apnic.net/2024/10/22/the-ipv6-transition/</a> Geoff Huston argues that the IPv4 to IPv6 transition has stalled (one estimate is that it won't be completed until 2045) because the problem IPv6 solved isn't really relevant any more. It's a long and detailed article; basically, the assumption that "every host needs a unique IP address because that's what identifies the endpoint of a connection" is simply not the way things really work any more. A few huge companies mediate most connections, they use NAT internally, there are many hosts with the same IP address, but they hide that with the result that as far as pretty much everything is concerned a host is identified by just its name. That's a very limited summary - do look at the article.<div><br></div><div>If this is indeed an accurate description of the Internet of today, then the ideas we all grew up with around DNS and IP are really no longer valid - and in turn all the security structures we've built on those understandings should be approached anew.</div><div><div> -- Jerry</div><div><br></div><div><br></div><div><br></div></div></body></html>