Thank you for your reply.
In the prebuilt image for Dragonboard Ubuntu Core OS, I am able to connect to the Wifi Access Point in the first boot screen. After this, I get the ssh info for the board.
But when I try to ssh to the board, I am being asked password. Can you please let me know as to how you fetched the SSH keys and did a ssh to the dragonboard.
I did a cat /lib/firmware/wlan/macaddr0 in our custom built Ubuntu Core OS Image and got the mac address.
But then how can I assign the mac address to the wifi interface (wlan0) in Ubuntu Core OS ?
I am already using the iw tools i.e. ifconfig, iw, wpa_passphrase, and wpa_supplicant to configure the wlan0 interface manually. But is there a way to automate these as done in the prebuilt image during the first boot screen ?