DHCP static address reservation
If you configure your Connector to be a DHCP server, you can also assign IP addresses to specific devices on your network. To reserve IP addresses:
- Configure your Connector to be a DHCP server.
 - Select Add DHCP Reservation.
 - In Hardware Address enter the MAC address for the device you want a specific IP address for.
 - In IP Address, enter the IP address for that device.
 - (Optional) If you need to reserve more IP addresses, select Add DHCP Reservation as many times as needed, and enter the new values.
 
Create a PUT request to update the LAN where you want to reserve addresses:
Example:
curl --request PUT \https://api.cloudflare.com/client/v4/accounts/{account_id}/magic/sites/{site_id}/lans/{lan_id} \
--header "X-Auth-Email: <EMAIL>" \
--header "X-Auth-Key: <API_KEY>" \
--header "Content-Type: application/json" \
--data '{  "lan": {    "static_addressing": {      "dhcp_server": {        "reservations": {          "<HARDWARE_MAC_ADDRESS>": "<IP_ADDRESS>",          "<HARDWARE_MAC_ADDRESS_2>": "<IP_ADDRESS>"        }      }    }  }}'