nanog mailing list archives

Re: Treasurydirect.gov unreachable over IPv6?


From: Chris Adams <cma () cmadams net>
Date: Wed, 17 May 2023 14:55:36 -0500

Once upon a time, Jay Hennigan <jay () 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 () cmadams net>


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