Hello,
I need to create a check that will pass if a UNIX machine only has one IP address assigned to an interface and fail if it has more than one. I have tried multiple regular expressions but they pass or fail no matter how many ip addresses they have. Some examples of what I have tried are below. I am using the Machine category and the IP Addresses field in the check builder. I have tried the =~ and %~ operators too. Does anyone have any ideas for me? Thanks.
(?:\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b)?
(?:\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b){1}
(\b(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\b){1}