I know that local network address space is often referred to as "private" addresses (even in RFC 1918 itself), but this might be misleading. These networks are not private, they just use a locally defined address space. This does not confer any sort of privacy.

Also, this specification provide privacy for network access.

I suggest maybe "local" would be more appropriate, in line with the use in RFC 4291 in "link-local" and "site-local". Though this is probably not entirely correct in that these address spaces are not always local, their address layout is locally defined. "Local" is also an antonym for "global", which is what these addresses are not.