SK> we both know the answer to this. GRE/NVGRE/VXLAN (gpe) all have protocol fields. It is not the same as signaling geneve. This is about transport independence. [PG] No I don’t know the answer, because VXLAN-GPE is not used today and hardware does not supporting offloading it. There is a proposal on generic UDP encapsulation which uses IP protocol number,
[Xiaohu] Did you mean http://tools.ietf.org/html/draft-ietf-tsvwg-gre-in-udp-encap-01 ? If so, there is an ETYPE field in the GRE header which would be used for indicating the existence of metadata in the encapsulated packet. Xiaohu how would you carry NSH in that? Isn’t that dictating that you would get transport independence only if you support encapsulating ETYPE? Btw think about other use case, how do you carry IPv6 in IP and Ethernet?
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