There is another GEO option which is not contained in the Global Balancing main menu option – Use for GEO Responses and Requests. You can get to this setting by going to System Configuration > Network Setup and selecting the relevant interface.

By default, only the default gateway interface is used to listen for and respond to DNS requests. This field gives you the option to listen on additional interfaces. When this option is enabled, GEO also listens on any Additional addresses that are configured for the interface.

Note: This option cannot be disabled on the interface containing the default gateway. By default, this is eth0.
Note: LoadMaster High Availability (HA) pairs only listen on the shared IP address.