RFC 3530:Network File System (NFS) version 4 Proto...
RFC-Ref

same IP address


Click on the red underlined text to get to the source

... NFS responses, the client ensured that the responses came from the same IP address and port number that the request was sent to. While such a model is easy to implement and simple to deploy and use, it is certainly not a safe ...



Google
Web
RFC-Ref