Sly Gryphon

Gryphon Verified Client IP determines the client IP by walking the forwarding chain, only trusting addresses that match your configured proxy networks (by CIDR range). It stops at the first untrusted hop, which is the true client IP. The resolved address replaces <code>REMOTE_ADDR</code> early in the WordPress lifecycle, allowing other plugins to use it.
The component is secure by default and only trusted proxies are traversed; spoofed headers are ignored. Both IPv4 and IPv6 are fully supported, including protocol translation.
Multiple header formats are supported including standard RFC 7239 <code>Forwarded</code>, common <code>X-Forwarded-For</code>, Cloudflare <code>CF-Connecting-IP</code>, or any custom header.
The component includes a diagnostics panel that can be enabled to record incoming requests with full header dumps and algorithm step traces for debugging.
For more detail, see the GitHub project site <a href="https://github.com/sgryphon/essential-wordpress-verified-client-ip" rel="nofollow ugc">Gryphon WordPress Verified Client IP</a>.
<h4>Compatibility Note</h4>
If your server uses Apache <code>mod_remoteip</code> or nginx <code>set_real_ip_from</code>, those modules will pre-resolve <code>REMOTE_ADDR</code> from forwarding headers before PHP runs. Disable the web server module and let this plugin handle IP resolution instead, or let it pre-resolve and use this plugin for any additional proxies not covered by the engine.

Gryphon Verified Client IP

Determines the true client IP by verifying Forwarded and similar headers, traversing only trusted proxy hops.

alessiobravi

Simple IP detector widget for WordPress to show if user is connecting with IPv6 or IPv4.
IPv4 Address TAG will be marked in RED while IPv6 ones will me marked in GREEN, to remember the reached availability limits of v4 Protocols.
Statistics (percentage) of clients using IPv6 and IPv4 are generated and printed.

Client IP Detector Plugin

A Simple widget to display client IP Address and print if the client is connecting via IPv6 or IPv4.

Gryphon Verified Client IP vs Client IP Detector Plugin