Comment 21 for bug 2064926

If I understand the code correctly, 30-hostname only changes the hostname if it was the default like `(none)` or if it was set by dhcpcd previously (that's why need_hostname checks for the old hostname).

In case /etc/hostname is included in the initrd (which is probably the case for your initrd), the hostname will not be changed by 30-hostname.

Can you change

```
 need_hostname || return
```

to

```
 need_hostname || return 0
```

This should exit 30-hostname in this case.