/etc/freeradius/3.0/mods-available/mac2ip is in freeradius-config 3.0.16+dfsg-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | # -*- text -*-
#
# $Id: a4ead1d64e8220344b483718ece4712bef5e9e36 $
######################################################################
#
# This next section is a sample configuration for the "passwd"
# module, that reads flat-text files.
#
# The file is in the format <mac>,<ip>
#
# 00:01:02:03:04:05,192.0.2.100
# 01:01:02:03:04:05,192.0.2.101
# 02:01:02:03:04:05,192.0.2.102
#
# This lets you perform simple static IP assignments from a flat-text
# file. You will have to define lease times yourself.
#
######################################################################
passwd mac2ip {
filename = ${modconfdir}/${.:name}/${.:instance}
format = "*DHCP-Client-Hardware-Address:=DHCP-Your-IP-Address"
delimiter = ","
}
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