Let’s Encrypt: Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: 6

Today, about a nearly two weeks after making some config changes for some Let’s Encrypt certs, today I saw new-to-me messages: [Sat Jun 13 18:46:07 UTC 2026] Renewing: 'r720-02-pg01.example.org' [Sat Jun 13 18:46:07 UTC 2026] Renewing using Le_API=https://acme-v02.api.acmeencrypt.org/directory [Sat Jun 13 18:46:07 UTC 2026] Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: 6 [Sat Jun 13 18:46:07 UTC 2026] Cannot init API for: https://acme-v02.api.acmeencrypt.org/directory. [Sat Jun 13 18:46:07 UTC 2026] Sleeping for 10 seconds and retrying. [Sat Jun 13 18:46:17 UTC 2026] Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: 6 [Sat Jun 13 18:46:17 UTC 2026] Cannot init API for: https://acme-v02.api.acmeencrypt.org/directory. ... In this post: FreeBSD 15.0 acme.sh-3.1.3_1 Looking up that URL, I found: CURLE_COULDNT_RESOLVE_HOST (6) Could not resolve host. The given remote host was not resolved. Let’s see:…