Let's Encrypt EC256 cert disables TLS1.2?

Hi all

I have a rather standard Traefik configuration using TLS 1.2 and 1.3.

When using RSA4096 certificates, all goes well and both TLS versions are supported. However, when I change the key type to EC256 and have LE generate a new certificate, TLS 1.2 stops working. I verified all of this with Qualys SSL labs.

Is this the expected behaviour? Does TLS 1.2 not support EC certificates?

Please post the relevant tls sections from your config.

TLS v1.2 works with ECC keys. You may be caught up in the Cipher Suites.

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