XDR is used to encode/decode the header for the SunRPC protocol illustrated by Figure 5.18. The XDR version is determined by the RPCVersion field. What potential difficulty does this present? Would it be possible for a new version of XDR to switch to little-endian integer format?

Figure 5.18)

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0 XID MsgType= CALL RPCVersion=2 Program Version Procedure Credentials (variable) Verifier (variable) Data 31 (a) 0 XID MsgType = REPLY Status = ACCEPTED Data 31 (b)