TGV Software's MultiNet for OpenVMS version 3.5 contains "LPD/LPR printing services" as part of its standard feature set.
There may be other third-party products which provide this functionality. This product is not tested by Apple, and therefore, not supported by Apple Computer.
For more information on configuring non-UNIX software for TCP/IP printing, see the Tech Information Library article, "LaserWriters: TCP/IP Printing from Non-UNIX Workstation."
The Tech Info Library article titled "Locating Vendor Information" can help you search for a particular vendor's address and phone number.