@stepler for what it's worth, it does seem to persist across reboots if you just overwrite the file but obvs doesn't survive upgrades

I'm on 1.4-rolling-202101100217 and it looks like the DUID command is gone at the interface level or system level. Besides overwriting the DUID file (which seems to not persist between upgrades), is there a good strategy here if the use-case doesn't require a custom DUID per interface?

just confirming 1.4-rolling-202101100217 works as well

need to use wpa_supplicant on a wired interface. Currently running on 1.3 rolling 2020-08-01 and used a manual entry in /etc/network/interfaces 'wpa-driver wired' . Attempted on rolling 2020-12-24 and it seems that VyOS no longer respects settings in /etc/network/interfaces so would require this capability. On boot, running sudo /usr/sbin/wpa_supplicant -Dwired -ieth0 -c /config/myconfig.conf works but no survivable on reboot