In this case, it's an HTTP request to https://www.instagram.com/, but it has happened before like this.
- From my home (Ubuntu, i686) server it's very fast (~ 0.3 sec).
- From my online, modern (Ubuntu, x86_64) server it's very slow (~3.5 sec).
- From another online, older (Redhat, x86_64) server it's in between (~ 0.6 sec).
All 3 servers are in the same country. They all run Linux, though not the exact same. Results are consistent.
dig from all 3 servers gives the same ipv4 result.
Why the difference? I'm not worried about the middle (0.6 sec), but 3.5 sec is waaay to slow.
I've had a similar problem with a very slow SSH handshake, which was due to ipv6 vs ipv4. Could that be the problem? How would I find out?
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