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How do you CIDR Match a subnet in a list of subnets?

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So IP to a subnet CIDR match has always worked in Splunk. No issues there. BUT a request came where we need to do a subnet to subnet CIDR match, and other than hacking my way out of it, I don’t think the cidrmatch function honors that. Example.. IPCidr = 10.1.1.0/24 Subnetlookup.csv 10.1.0.0/16 10.2.1.0/24 10.2.0.0/16 Cidrmatch doesn’t work when I try to check IpCidr in Subnetlookup,csv.. The moment I change it to 10.1.1.1, it works. Any ideas.. is there any other function that does that?

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