ip-svc

Go service that will show user IPv4 and IPv6 addresses

flowchart TD
    A[net/http]
    A --> B{get request RemoteAddress}
    B --> C{is ipv6?}
    C -->|yes| D[render template with IPv6 address]
    C -->|no| E[render template with IPv4 address]
    D --> F{request ipv4 address from ip4.mziesel.nl}
    F -->|success| G[add address to page]
    E --> H{request ipv6 address from ip6.mziesel.nl}
    H -->|success| G[add address to page]

works by creating four dns records

A		ip.mziesel.nl		<server ipv4>
AAAA	ip.mziesel.nl		<server ipv6>
A		ip4.mziesel.nl		<server ipv4>
AAAA	ip6.mziesel.nl		<server ipv6>

endpoints

Endpoint	Description
/	HTML page
/raw	Just the raw IP
/json	Data in json

the application is also available as a docker image

If you want to host it yourself you need to modify the IPV4_ENDPOINT and IPV6_ENDPOINT env vars, look in the docker compose file for examples.