The IP address of the client or range in CIDR notation. For IPv6, use `ipv6addr`. `ip` and `ip6` are mutually exclusive but one must be supplied. Default: `undef`.
The IP address of the client or range. For IPv6, use `ipv6addr`. `ip` and `ip6` are mutually exclusive but one must be supplied.
On FreeRADIUS 2, specify the netmask separately. On FreeRADIUS 3, set `ip` in CIDR format. Default: `undef`.
##### `ip6`
The IPv6 address of the client or range in CIDR notation. `ip` and `ip6` are mutually exclusive but one must be supplied. Default: `undef`.
##### `netmask`
The netmask of the client, specified as an integer, e.g. `24`. Only to be set on FreeRADIUS 2. Default: `undef`.
##### `shortname`
A short alias that is used in place of the IP address or fully qualified hostname provided in the first line of the section. Required.