As per here, under Have an expired VCP of any solution: VCP6-DCV Certification
You will need to sit the class, then do the Foundation exam and then the streamed (DCV, in this example) exam.
The list of valid classes (at this time) are:
vSphere: Install, Configure, Manage [V6]
vSphere: Optimize & Scale [V6]
VMware vSphere: Fast Track [V6]
VMware vSphere: Design and Deploy Fast Track [V6]
VMware vSphere: Troubleshooting [V6]
vSphere: Install, Configure, Manage [V6] On Demand
VMware vSphere: Install, Configure and Manage plus Optimize and Scale Fast Track [V6.0]
So potentially you could take a class that could benefit your real world work and count as the class requirement for the certification.