Containerisation and microservices architecture are getting momentum in nowadays ICT field. Microservices have a demand on a high number of containers which requires orchestration and interconnection. Kubernetes, an open-source container orchestration platform, has been widely adopted by cloud service providers (CSPs) for its advantages in simplifying container deployment, scalability and scheduling. Networking is one of the central components of Kubernetes, providing connectivity between different pods (group of containers) both within the same host and across hosts. Today's network infrastructure is increasingly implemented using NFV (Network Function Virtualization) technology where network services are implemented in pure software. This brings several advantages such as flexibility and cost reduction as these functions can be performed on general purpose hardware.