iwd supports very basic AP mode functionality.
The easiest way to set this up is to create a new Access Point profile. For detailed documentation of all properties, please refer to 'man 5 iwd.ap'. First create '/var/lib/iwd/ap' directory if it doesn't exist yet:
# sudo mkdir -p /var/lib/iwd/ap/
Then place the following contents in the file /var/lib/iwd/ap/<ssid>.ap where <ssid> will be used as the SSID of the Access Point when it is started:
[Security] Passphrase=password123 [IPv4] Address=192.168.250.1 Gateway=192.168.250.1 Netmask=255.255.255.0 DNSList=220.127.116.11
With iwd started, start iwctl and switch your device into ap mode, then start the AP mode with the just-created profile:
[iwd]# device wlan0 set-property Mode ap [iwd]# ap wlan0 start-profile test [iwd]#
Set up NAT:
# sudo sysctl -w net.ipv4.ip_forward=1 net.ipv4.ip_forward = 1 # sudo iptables -t nat -A POSTROUTING -s 192.168.250.0/24 -j MASQUERADE
You should now be able to connect to SSID 'test' and be able to reach whatever outside world that the box running the access point mode can reach.