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Clean up. For consistency, rewrite the IPv4 check to match the same style as the new IPv6 check. Note that ipv4_is_loopback() is somewhat broader in its interpretation of what is a loopback address than simply "127.0.0.1". Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>