Quick and easy – generate self-signed certificate in one line:

1

openssl req -new -newkey rsa:4096 -days 365 -nodes -x509 -keyout ipv6.mysql.idrobot.net.key -out ipv6.mysql.idrobot.net.crt

Country Name (2 letter code) [AU]:DE
State or Province Name (full name) [Some-State]:Niedersachsen
Locality Name (eg, city) []:Hannover
[Internet Widgits Pty Ltd]:ipv6.mysql.idrobot.net
Organizational Unit Name (eg, section) []:
Common Name (eg, YOUR name) []:Igor Drobot
Email Address []:id@drobot.de