ERR_SSL_VERSION_OR_CIPHER_MISMATCH error for infra.laprimaire.org subdomains

[JMLX42]

When CloudFlare proxying is enabled, all infra.laprimaire.org subdomains will return a ERR_SSL_VERSION_OR_CIPHER_MISMATCH error.

This is presumably a side-effect caused by the Vouch proxy.

For now, CloudFlare proxying has been disabled for all those domains.

[JMLX42]

According to this official CloudFlare documentation:

https://community.cloudflare.com/t/community-tip-fixing-err-ssl-version-or-cipher-mismatch-in-google-chrome/42162

Certificates will only cover a single level of subdomains (.example.com, but not *…example.com)

Which explains why all infra.laprimaire.org throw an SSL error.

Apparently, the solution involves features that are only available for the paid version of Cloudflare:

https://community.cloudflare.com/t/ssl-certificate-not-working-on-second-subdomain/101819/4

@thibauld AFAIK we're using the free version of Cloudflare. Correct?