Thanks Patrick for all the information. I shared the issue with upstream and they told me that that "syntax error" might refer to the file being parsed by luaunbound (managed by libunbound), and not a Lua syntax error. In that case, can you share:
- /var/unbound/db/root.key - /var/unbound/etc/unbound.conf - /etc/hosts - /etc/resolv.conf Feel free to share them privately with me if it contains sensible information, but please try not to modify them before sharing.