Post #319144

@ktims@nonexistent.ca I just had an epiphany. This whole thing actually has nothing to do with TLS. That was a rabbit hole I went down due to my initial web searches hitting upon things like openssl 3.5 introducing the post-quantum protocols. No, this thing is *purely* about IPv6 PMTU failing in this use case. I mistook my "server has a different MTU, because it's talking on ppp0 directly, and the desktop has 4088 MTU due to its LAN NIC" for "server has openssl 3.0, desktop has 3.5". So, there's *not* a case where only the TLS negotiation would trip up, and the later bulk data be fine, as TLS is a red herring in this whole thing, only looked into because I was observing the issue with web browser TLS connections.