Hi,
Sorry I didn't report how to fix (at least my problem).
Wouter's workaround for unbound configuration fixed the problem. Thank you.
server:
edns-buffer-size: 1280
This avoids UDP fragmentation and makes TCP fallback.
Yes it's better if I fix my (broken) firewall but I couldn't because
it's built-in-modem firewall.
Best Regards,
--
Daisuke HIGASHI <[email protected]>
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