IP's with diffrent subnets

Hi.

i tried to search for this question, but couldn't find any results.

We received from our provider additional IP with a different subnet then the main one. Are there any problems of running ISPConfig with such IP?

Also, there is an admin section where the additional IP can be added. Should I add a plain IP, or in the CIDR format?

Thanks.

 

Thanks for the reply.