====== FreeRadius tricks ======

=== DNS load balancing ===

​

<code>

# Let's suppose we have two DNS servers: 8.8.8.8 and 8.8.8.9.

# Our purpose is to get the DNS load balanced for the DNS servers.

# Example: within the "post-auth" section add the following stuff:

    if ( "%{rand:2}" == "0" ) {

        update reply {

            # delete all the DNS attributes

            VasExperts-DHCP-DNS !* ANY

            VasExperts-DHCP-DNS = "8.8.8.9"

            VasExperts-DHCP-DNS += "8.8.8.8"

        }

    }

    else {

        update reply {

            # delete all the DNS attributes

            VasExperts-DHCP-DNS !* ANY

            VasExperts-DHCP-DNS = "8.8.8.8"

            VasExperts-DHCP-DNS += "8.8.8.9"

        }

    }

</code>