kubatek94/dyndns-cloudflare-adapter

DynDNS compatible server which updates your CloudFlare DNS records when your dynamic IP changes

dyndns-cloudflare-adapter

HTTP server implementing the DynDNS.org protocol, or a STUN daemon allowing to update the CloudFlare DNS records with a dynamic IP.

Building

docker build -t dyndns-cloudflare-adapter .

Pre-requisites

You'll need to create a Cloudflare API access token with the Zone.DNS write scope.

Running as daemon (with STUN IP detection)

docker run -it -e CF_API_TOKEN=YourApiToken -e HOSTNAME=.+\-domain\.co\.uk dyndns-cloudflare-adapter

Running as DynDNS server

Configure your router to call the server using custom endpoint. It needs to provide hostname and myip query string parameters:

• myip is the new IP address of the server
• hostname is a regexp that is used to select domain names from your account. Only domains matching the regexp will be updated with the provided IP.

docker run -it -p 8080:8080 CF_API_TOKEN=YourApiToken dyndns-cloudflare-adapter

Example OpenWrt config

In /etc/config/ddns

config ddns 'global'
    option ddns_dateformat '%F %R'
    option ddns_loglines '250'
    option upd_privateip '0'
    option use_curl '1'

config service 'myddns_ipv4'
    option enabled '1'
    option interface 'wan'
    option ip_source 'network'
    option ip_network 'wan'
    option use_https '1'
    option cacert 'IGNORE'
    option force_interval '1'
    option force_unit 'days'
    option lookup_host 'your-domain.com' # used to check if the current IP is already up to date (nslookup for DNS)
    option domain '.+-domain\.com' # the regexp of domains to update
    option username 'HttpBasicUser'
    option password 'HttpBasicPass'
    option dns_server '1.1.1.1' # optional
    option update_url 'http://[USERNAME]:[PASSWORD]@dyndns.your-domain.com/nic/update?hostname=[DOMAIN]&myip=[IP]'