Can you attach this type of ArubaOS-CX interface to a VRF?

A GRE tunnel interface is a virtual interface that can encapsulate different network layer protocols inside point-to-point or point-to-multipoint links over an IP network1. It can be assigned an IP address and attached to a VRF. A VRF allows multiple instances of a routing table to co-exist within the same router2. By attaching a GRE tunnel interface to a VRF, you can isolate the traffic of that tunnel from other tunnels and routing domains2.