422 Unprocessable Entity when using local IP address

[theblang]

I have started noticing recently that when I try to register and redirect with Devise Token Auth on my local environment, the redirect fails if I am using any IP address besides localhost. I receive a 422 Unprocessable Entity error code and my response contains an error "Redirect to 'http://10.0.2.2:3001/` not allowed." Examples of IP addresses that cause this are ones like 10.0.2.2 from a virtual machine / simulator, or even 127.0.0.1 on my native desktop. If I replace these IP address with localhost then all works correctly.

[theblang]

I needed to whitelist the appropriate IP addresses (in addition to localhost) using config.redirect_whitelist.