The "ip valid" check uses RegEx so it should work reliably. However, you may need to make sure that you put it in quotes, I can't remember if the default parsing mechanism handles a decimal point as a valid character or a delimiter.
It uses the following pattern:
Code:
\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b
And you can test it on a site like
this to see if what you're typing is valid.
If you can't get it to work, please paste exactly what you were typing and put it between [code][/code] tags. If you want to anonymize the IP address, change a couple of the numbers but don't change the number of characters that are in the IP.