CDE does not support hostnames which are greater than 8 characters.
Many types of networking services are supported on HP-UX,
each of which uses a separately assigned system name and naming
convention. To ensure predictable system behavior, it is essential
that system names (also called host names or node names) be assigned
in such a manner that they do not create conflicts when the various
networking facilities interact with one another.
One of the networking services used by CDE is uname(2). This is a POSIX.1, XPG4 compliant interface which restricts
node names (system names) to 8 characters (plus a trailing NULL).
This requires that CDE limit system names to 8 characters.