Chongfeng Xie, Chenhao Ma, Xing Li, Gyan Mishra, Mohamed Boucadair, 2022-06-24, For the IPv6 changeover, twin-stack deployments require both of those IPv4 and IPv6 transfer abilities to be deployed in parallel. The IETF has standardized a strategy for SFC making use of the Network Service Header specified in RFC 8300.