Topic: /etc/hostname is dangerous
setting up hostname in /etc/hostname is primarily toward systemd
openrc user should set hostname in /etc/conf.d/hostname instead
https://wiki.parabola.nu/Beginners%27_Guide#Hostname
how dangerous is it ?
- it mess up your network, especially network manager
- it mess up your X11 and block your apps, "error cannot open display 0" if you trying an network connection