alt Hacker NewsIt is a meme, but it's always DNS
This error can happen if there's an AAAA record, but it contains the ipv4 address packed inside a ipv6 mask.
If the AAAA record says ::ffff:10.0.0.105, then you can either fix DNS or do what's in the blog, which should stop checking for quad A records.
It's a good write-up but I wish this blog post went just a little bit deeper with the investigation to confirm whether this is the issue (ollama.tymscar.com having an AAAA record); it's missing the answer to "Why is the JVM trying (or initializing toward) an IPv6 path first and not gracefully falling back?"