I have a WordPress Multisite set up with my main domain name (let's call it mysite.com), and I have another domain name as a parked domain which is pointed to the main web root (it's just the main domain name with a different TLD, let's call it mysite.net).
Currently WordPress runs on the main domain and any URL using the parked domain redirects to the signup page. Is there any way I can tell WordPress to treat any URL using the parked domain as if it were the equivalent URL on the main domain? So if I went to mysite.net I would see the main site (the same as mysite.com), and site1.mysite.net would be the same as site1.mysite.com.
Am I missing something really simple?