Hi,

The following repository seems to have an expired certificate key:

https://download.opensuse.org/repositories/devel:/languages:/perl/SLE_12_SP4

curl -v "https://download.opensuse.org/repositories/devel:/lan >
* Trying 2001:67c:2178:8::13...
* TCP_NODELAY set
* Connected to download.opensuse.org (2001:67c:2178:8::13) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (OUT), TLS alert, Server hello (2):
* SSL certificate problem: certificate has expired
* stopped the pause stream!
* Closing connection 0
curl: (60) SSL certificate problem: certificate has expired
More details here: https://curl.haxx.se/docs/sslcerts.html