The recent adoption of cloud native technologies by telecommunication industry is accompanied by the incoming development of Network Functions that are containerized and packaged as light-weighted microservices. In order to efficiently orchestrate Cloud-Native Network Functions (CNFs), thorough migration strategies should be supported to place and migrate the CNFs. In this paper, we present a testbed illustrating the migration of pods between remote K8S cluster. As a use case, we consider the migration of a network function belonging to an opensource 5G core network (namely, Magma).