Yeah, I wonder if my nat64 is fragmenting packets somehow, that some where upstream they are arriving in different orders? Unless its the distance, with some link between Melbourne and apam having a dodgy or overloaded router?
If it's fragmenting packets, it's probably almost certainly my OS - I found another bug in the IP fragmentation handling just now. I use OPNsense for a router, so I doubt that's it, though I guess it could be one somewhere between.. however, my spidey sense tells me that it's mostly likely caused by the novice hobby OS developer rather than talented network engineers using tried and true OSes :P
That said, when I talk to apam over IPv4 directly, its sub 1 second so maybe its not link related, but MTU related on my end because of NAT64. Must admist I havent looked at it in detail, and I'm not noticing too much issue anyway (while talking with other websites).
If you want to do a test with my nginx server, it's on HTTPS, on the same domain - it's running a wordpress site for my BBS, so I guess not an ideal comparison, but close enough :P
Andrew
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