How to use two SSL-Certificates (a Wildcard and a EV) on the same virtual server IP

Hi everyone

We have a case with a virtual server, on which we have to use two SSL-Certificates on the same IP. Usually it isn't a problem, we use on a virtual server four different wildcard-certificates with SNI and it works perfectly. But in this special case, we should use a wildcard and a extended validation certificate. And to make it more difficult, the main domain on both certificates are the same.

To explain that, we use a *.example.com for different requests like test1.example.com, test2.example.com and so on. But now we have to use a extended validation certificate only for . To set the ev-certificate as the default certificate for SNI wasn't successful. I assume, that the wildcard-certificate "overrides" the ev-certificate. If both certificates are used, only the the wildcard-certificate shows up at . If I use only the ev-certificate, it works fine. But the other subdomains won't work anymore as expected.

Now I'm not sure if it is possible to use those two certificates with SNI at all? We use a BIG-IP 11.6.1 Build 2.0.338. Any help would be very appreciated.

Many thanks in advance! Marco