OpenWRT 18.06.4 – DDNS for CloudFlare

Install packages

1. Login to you router
2. Go to [System] -> [Software]
3. In {Actions} tab, click the <Update lists> button
   
4. Install the following packages
   • luci-app-ddns
     1. Will auto install
        • ddns-scripts
   • ddns-scripts_cloudflare.com-v4
     1. Will auto install
        • ca-bundle
        • libcurl
        • curl

Settings for CloudFlare

For example, I have a domain called ‘myabc.com’ and would like to have a DDNS ‘myRouter.myabc.com’ to point to my router.

Setup a zone in CloudFlare

1. Login to your CloudFlare account
2. Go to your domain, in my example it will be ‘myabc.com’
3. Go to [DNS]
4. Click <+Add record>
5. In {Type} field select:
   • A
6. In {Name} field input:
   • myRouter
7. In {IPv4 address} field input a random IP first
8. Click <Save> button
   
9. Go to [My Profile]
10. Go to {API Tokens} tab
11. Go to {API Keys} section
12. Click the <View> button at {Global API Key}
13. Copy that API key and it will in used in the next section
    

Add DDNS entry in OpenWRT

1. Go to [Services] -> [Dynamic DNS]
2. In section {Overview} -> {Basic} tab
3. In drop down menu {DDNS Service provider [IPv4]}:
   • cloudflare.com-v4
4. Go to input field and input
   • myRouter_myabc_com
5. Click <Add> button and it will go into the details page
6. Ensure {Enabled} field:
   • Marked with tick
7. In {Lookup Hostname} input field:
   • myRouter.myabc.com
8. In {IP address version} select:
   • IPv4-Address
9. In {Domain} field in put your domain with a @ character:
   • myRouter@myabc.com
10. In {Username} field:
    • your username for login CloudFlare, ie: myEmail@gmail.com
11. In {Password} field:
    • The Global API Key from CloudFlare
      
12. In section {Overview} -> {Advanced Settings} tab
13. In {URL to detect [IPv4]} field
    • http://checkip.dyndns.com
14. In {Event Network [IPv4]} field
    • wan
15. Click <Save & Apply> button