On Thu, Jun 18, 2026 at 9:20 AM <sronan@ronan-online.com> wrote:
Honestly, if SMBs are the only ones staying on IPv4 with a /28 each, I’m fine with that :)
Yup! But that's why the subject line of this thread is met with "never gonna happen" -- because there's a *lot* of SMBs that are better off staying on IPv4 with their /28 and a pair of upstream NAT devices. And that's a *big* economic splash zone of collateral damage you'd be causing, even just doing a "let's turn off IPv4 for a day". So, hopefully people now understand why IPv4 isn't going away, and we can stop talking about a flag day or "shut it down for a day". Nobody wants to cause that level of economic harm for zero benefit. Thanks! Matt (still have my tee-shirt from helping with the first world IPv6 day; but pragmatic enough to understand and explain why IPv4 is never going away)