In GPRS testing, the APN DNS Lookup checkbox allows emulated SGSNs to make a DNS query for the APN name to determine the GGSN address and forward the PDP contexts create request accordingly. So this interface only allows Landslide to differentiate Gn/Gp traffic from DNS requests. Landslide is going to send a DNS request for every user configured in the test case. So landslide allows you When you provision multiple nodes to spread MN sessions evenly among them.