This article outlines how to rectify the issue "Please enter a valid IP" when registering a network on the Umbrella dashboard.
The error typically pops up when the IP address range that is being registered has an invalid CIDR notation:
The Umbrella dashboard at this time will accept only valid CIDR notation blocks. This does not include support for CIDR-like ranges (for example, /30 is 4 IPs, so start address +4) will return the error shown above. Only valid, exact CIDR block matches are accepted into the dashboard at this time. Any input that is not an exact match will yield the error above.
To add your desired network that is a partial CIDR block, you will need use the CIDR block that describes your network's total IP block (usable plus broadcast) or multiple blocks that form your IP range (i.e. a /31 and two /32). You may use any 3rd party website to verify the CIDR notation that you are using is correct. An example is this 3rd party website that will provide you with the correct CIDR notation based on your network range. You may apply all registrations to the same policy to ensure consistent policy application across all IPs.
- 10.0.0.1/30 (invalid CIDR, valid IP error): Instead, register the below
- 10.0.0.0/30 (valid CIDR, accepted)