How do I get prompted for a hostname in a preseed?

installation preseed

Found the answer myself.

I removed netcfg/get_hostname=install from the pxe boot line

Related

Why my newly created account is asking for a pasword if I didn't set one?
Weird behavior when overriding gnome alert styling?
How do I change Ubuntu's GUI?
What is the easiest method to share files between Windows and Ubuntu?
No additional drivers available
Rhythmbox not saving the album art permanently
Can you install Ubuntu directly to a HDD?
How to hide a running process ?
How can I make a Triple boot
Remote reboot over ssh does not restart [duplicate]
Title bar settings missing in GNOME Tweaks on Ubuntu 20.04
How to run Ubuntu Tweak's janitor automatically?