Google Shortener API：白名单IP无效

Question

I have a Google Shortener API credential setup on Developers Console. I have a Public API access created for a key, with the allowed IP of 199.180.250.40.

But when I call the API, I get this Google error:

There is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your API key configuration if request from this IP or referer should be allowed.

I made sure my server is 199.180.250.40, and the script is running off that server. I've triple checked, including visiting whatismyip using lynx.

I'm using this code: https://github.com/sebi/googl-php

With this code:

        $googl = new Googl("my-key");
        $short = $googl->shorten($url);
        unset($googl);

Why is it rejecting even though that is my servers exact IP?

I don't send userIp but Google says:

If the userIp parameter is missing, your machine's IP address will be used instead.

Are there any access logs available on Google's side I can review?

Answer 1

As mentioned in the comments, the server was using IPv6 and thus didn't match the IPv4 I entered. I entered my IPv6, and it worked.

There was also a "requests per second limit" set to 5 or so. This was a bit low, so I had move it up to 30.