wacky'6 second iteration for CloudFlare DDNS.

Key features:

• IPv6 DDNS support
• Network interface address detection
• Daemon (as a service) or One-Shot (as a command line tool)
• [ More to come ]

CF_KEY=abcdef [email protected] cf-ddns -6 hostname.example.com -D

• CF_KEY is the CloudFlare access key
• CF_EMAIL is the CloudFlare account email address
• -6 hostname.example.com instructs the program to set DNS AAAA record for hostname.example.com
• -D instructs the progrma to run like a command line tool, instead of going into daemon mode
• By default, the program detects IPv6 address by looking at the network interface IP addresses

1. Download (or build) the binary, put it to /usr/local/bin/cf-ddns
2. Add executable permission chmod +x /usr/local/bin/cf-ddns
3. Modify and add the sample systemd unit file to OS
   • Sample file: etc/systemd/system/cf-ddns.service
   • Set CF_KEY and CF_EMAIL environment variable to your Cloudflare access key and email address
   • Set desired hostname (V6_HOST)
4. Enable the cf-ddns service in systemd