We had a situation where we needed to use the IP Address to attach a client to a server, both on V10.2. The server had IPV6 enabled, and the client would not connect.  When we disabled IPV6 - i.e. went back to IPV4 - it connected without issue. 

Is this "expected behavior", and if so, are there plans to support IPV6?  That would be for all the Client and also Quick Fields, and Import Agent.