I have Ubuntu Server 14.04 LTS with Apache 2.4.16 with native IPv6+IPv4 dualstack connection (public addresses). When I check my domain name at Qualys SSL, test for IPv4 shows A+ and everything seems OK, but for IPv6 address it shows error "No secure protocols supported". But I have no idea why. I can access my website by https protocol from IPv6-only computer and everything works fine, connection is encrypted, certificate is OK.
URL forum.inf.upol.cz (this server is also running wiki.inf.upol.cz - SNI).
What is wrong?