Treasurydirect.gov unreachable over IPv6?

Wed May 17 19:55:36 UTC 2023

Once upon a time, Jay Hennigan <jay at west.net> said:
> On 5/17/23 12:19, Jesse Rehmer wrote:
> > From Spectrum, I'm able to hit port 80, but the redirect to 443 fails.
> 
> Smells like broken PMTUD to me.

Yeah.  From Google Fiber, IPv4 works.  IPv6 connects on port 80, gets
redirected to HTTPS, which connects on port 443 but fails in SSL
negotiation.

I wonder if some over-zealous network admin blocked all ICMPv6.
-- 
Chris Adams <cma at cmadams.net>