It was kept as a debugging requirement/placeholder. Because RPC is mostly bug free with regard to basic xdr structures, it doesn't make sense to carry this forward in release. Saves 8bytes in each request. Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875