IP Addr Comparison

[BOUILLOUD Corentin]

Hi Team,

I would like to ask your help about IP address comparisons in FreeRADIUS 3.0.27.
I want to restrict a mac-address to a network, but comparison of ip address with a subnet doesn't seems to work as a check items :

11-22-33-44-55-66       NAS-IP-Address < 192.168.8.0/22
/etc/freeradius/3.0/authorized_macs[10]: Parse error (check) for entry 11-22-33-44-55-66: Invalid IPv4 mask length "/22".  Only "/32" permitted for non-prefix types

Yet, documentation says it should be possible.

"The syntax allows conditions such as 192.0.2.1 < 192.0.2/24.
This condition will return true, as the IP address 192.0.2.1' is within the network `192.0.2/24."

I also tried casting the attribute, without success :

11-22-33-44-55-66       <ipaddr>NAS-IP-Address < "192.168.8.0/22"
/etc/freeradius/3.0/authorized_macs[10]: Parse error (check) for entry 11-22-33-44-55-66: Invalid attribute name


Do user files have a different behaviour for comparisons and casting ?
I could use regex as a backup solution but it's quickly going to get difficult to read in the file :

11-22-33-44-55-66      NAS-IP-Address =~ "/^192\.168\.(8|9|10|11)\./"

https://freeradius.org/documentation/freeradius-server/4.0.0/raddb/mods-config/files/users.html#_format
https://freeradius.org/documentation/freeradius-server/3.0.27/unlang/condition/cmp.html#_ip_address_comparisons
https://freeradius.org/documentation/freeradius-server/3.0.27/unlang/condition/cmp.html#_casting

Regards,
Corentin BOUILLOUD


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