What is the way to match a range of IPs in the preprocess huntgroups file? This is with freeradius 3.0.12. Unfortunately, the sample huntgroups file doesn't show any example of matching a range. Here's what I've tried: network NAS-IP-Address =~ ^10\.254\. network NAS-IP-Address =~ "^10\.254\." network NAS-IP-Address =~ "10\.254\..*" network NAS-IP-Address =~ /^10\.254\./ Those all don't match: (0) if (&Huntgroup-Name == "network") { (0) ERROR: Failed retrieving values required to evaluate condition network NAS-IP-Address == 10.254.0.0/16 gives a parse error: /etc/raddb/mods-config/preprocess/huntgroups[5]: Parse error (check) for entry network: Invalid IPv4 mask length "/16". Only "/32" permitted for non-prefix types network 10.254.0.0/16 == NAS-IP-Address gives a different parse error: /etc/raddb/mods-config/preprocess/huntgroups[5]: Parse error (check) for entry network: Invalid vendor name in attribute name "10.254.0.0/16" I know *something* is happening with the regexps, because I can get a compilation error if I make it invalid: network NAS-IP-Address =~ ^10\.254\ /etc/raddb/mods-config/preprocess/huntgroups[5]: Parse error (check) for entry network: Error at offset 9 compiling regex for NAS-IP-Address: Pattern compilation failed: \ at end of pattern But it won't match the supplied NAS-IP-Address. I have no problem with a simple == condition matching a single IP address though. Any clues? Thanks, Brian.