[draft] [bug] Pinephone Pro doesn't serve IPv4 addresses on USB (?when installed on btrfs ?)

[DrYak]

After unpacking the file sfe-pinephonepro-4.5.0.21-devel-20230831.tar.bz2 (on a BTRFS partition instead of a EXT4 like the official installer does this), I don't get an IPv4 address assigned to the laptop when plugging the USB-C cable.

After searching through journald's logs, possible culprits could be:

usb_moded

/sys:
Sep 12 10:45:31 PinePhonePro usb_moded[373]: /sys/kernel/config/usb_gadget/g1/functions/mass_storage.usb0: mkdir failed: No such file or directory
Sep 12 10:45:31 PinePhonePro usb_moded[373]: /sys/kernel/config/usb_gadget/g1/functions/ecm.usb0/ethaddr: can't open for writing: No such file or directory
Sep 12 10:45:31 PinePhonePro usb_moded[373]: /sys/kernel/config/usb_gadget/g1/functions/ecm.usb0/wceis: can't open for writing: No such file or directory

usb_moded doesn't find some drivers' interface pseudo-files in the /sys tree?

udhcpd

Sep 12 10:45:32 PinePhonePro systemd[1]: Started udhcpcd DHCP server.
Sep 12 10:45:32 PinePhonePro udhcpd[500]: udhcpd: /etc/udhcpd.conf: No such file or directory
Sep 12 10:45:32 PinePhonePro udhcpd[500]: udhcpd: started, v1.34.1
Sep 12 10:45:32 PinePhonePro udhcpd[500]: udhcpd: can't open '/var/lib/misc/udhcpd.leases': No such file or directory
Sep 12 10:45:32 PinePhonePro udhcpd[500]: udhcpd: is interface eth0 up and configured?: No such device
Sep 12 10:45:32 PinePhonePro systemd[1]: udhcpd.service: Main process exited, code=exited, status=1/FAILURE
Sep 12 10:45:32 PinePhonePro systemd[1]: udhcpd.service: Failed with result 'exit-code'.

udhcpd isn't starting.