This modal receives a series of values representing Classless Interdomain Routing (CIDR) formatted addresses and a boolean indicator that tells us whether we expect them to be valid. The important thing to remember about CIDR addresses is that they look a lot like IPv4 addresses, only with a CIDR indicator at the end.
So, where an IPv4 address might look like 192.168.2.1, a CIDR address might look like 192.168.2.1/32. The value of the range indicator can be between 0 and 32, inclusive.
We run each address through our isValidCIDR function, but the results aren't what we expect. Let's fix that broken function.
Now that the validation function is running as expected, let's close that modal.