Document src_ipaddr in more detail

diff --git a/raddb/sites-available/dhcp b/raddb/sites-available/dhcp
index 14831ad..33da1f1 100644 (file)
--- a/raddb/sites-available/dhcp
+++ b/raddb/sites-available/dhcp
@@ -130,15 +130,17 @@ server dhcp {
                interface = ${..interface}
 
                #
-               #  When running as a DHCP relay, or sending unicast
-               #  responses, this IP address is used as the source
-               #  IP.  If unset, the value is taken from the "ipaddr"
-               #  field in this section. Since this might be
-               #  broadcast, it can be wrong.
+               #  The source IP for unicast packets is chosen from the first
+               #  one of the following items which returns a valid IP
+               #  address:
                #
-               #  This example uses the "ipaddr = 127.0.0.1" line above.
-               #  It doesn't use the "ipaddr = 255.255.255.255" in this
-               #  section.
+               #       src_ipaddr
+               #       ipaddr
+               #       reply:DHCP-Server-IP-Address
+               #       reply:DHCP-DHCP-Server-Identifier
+               #
+               #  For now, use the parent's "ipaddr", not the one
+               #  in this listen section
                #
                 src_ipaddr = ${..ipaddr}
        }