"How many of those are standard TCP/IP services as opposed to specific Unix
They are all RPC services. RPC is a "standard", in that an RFC has been
which discusses it. It is also not Unix specific, NFS (for instance) is
for many platforms other than Unix machines. (Aside: We sell it for VMS, Mac
and MS-DOS & OS/2) Part of RPC is a "version" field and is used exactly the
way you expect. (backwards compatibility). In that list there were many
distinguished only by the version number.
ergo.. there is at least one protocol in wide use which uses version numbers
The message I was responding to was a claim to the contrary.