What parameters needed to obtain cups host fqdn on separator pages?

[toodlelew]

Using : cups 2.4.14, cups-filters 1.28.16, and gutenprint 5.3.5 to queue print to a network attached "IP Anywhere" printer.

As the printer is network attached, it can receive print spooled from any of my systems. I would like to configure cups on each of these systems so that print spooled from that system will print on the printer with a separator page that identifies the system it came from.

The current suite of "canned" separator pages all print "localhost" as the hostname, even though each cups instance runs on a uniquely named system. I assume that this is because the tools local to that system connect to cups on that system through the localhost address. However, this is not helpful, as every host is "localhost".

What settings do I need to tweak so that print generated on a host, and spooled (locally) to a network printer, will print a separator page with the FQDN of the host (and not "localhost")?