Cool...I will use that Thanks On Wed, Sep 9, 2020 at 3:45 PM Fred Posner <fred(a)palner.com> wrote:

I would try: if(uri=~"10\.10\.10\.[[:digit:]]+\.[[:digit:]]+") or if(uri=~"10\.10\.10\.[0-9]+\.[0-9]+") --fred On Wed, 2020-09-09 at 15:53 -0400, Alex Balashov wrote:

This one with matching 4 numbers separated by dots is better, one can add restrictions that the last two numbers are in the range 0-255, if one wants to be more strict, but the expression will get more complex. However, it is recommended to use ^ and $ to enclose the expression and do not match hostnames like my10.10.10.10domain.com. The first example in this discussion $rd =~ "10\.10\..+" can match also other ips not in wanted range, like 8.10.10.23 As for matching the . (dot), it  has to be escaped like \., however over the time working with different libraries, scripting languages and parameters evaluation (which may require \\.) I developed the habit of using [ ] for matching the special characters, like here it would be $rd =~ "^10[.]10[.].+". Just to follow on Alex' remark. Otherwise, the match with ipops function is the most accurate for this case. To complete for those that are not aware of, one can avoid regex matching if wanted to match on prefix: starts_with("$rd", "10.10."). Then fnmatch() function can be also useful in some cases, it does shell-like pattern matching for file names. Cheers, Daniel On 09.09.20 22:18, Fred Posner wrote: -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Funding: https://www.paypal.me/dcmierla