where does `hostname -f` derive the domainname from? I have 2 systems, the first was buster --> bullseye with /etc/hostname containing "oscar" and `hostname -f` returning "oscar.domain.tld".
The second system is a clean install of bullseye with /etc/hostname containing "felix". On this system `hostname -f` returns "felix". DNS for both systems have FQDN entries. Where should the domainname be set in a clean fresh install of bullseye? tia, -Jim P.
