# 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"
        }
    }