Hello, Toby,
Thank you for bringing this to our attention.
Currently, due to the specificity of the issue, the possible solution that I can suggest is to use MaskType.Regex and specify the appropriate regular expression for the Mask property. The following StackOverflow thread offers suitable expressions for the IP validation:
https://stackoverflow.com/questions/5284147/validating-ipv4-addresses-with-regexp
I hope this helps.
Regards,
Dess | Tech Support Engineer, Principal
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