About routes in a single NIC configuration

If you want to configure a static route that relies on a gateway in the same subnet as the self IP address, you must first disable the setting that enforces single NIC setup:

modify sys db provision.1nicautoconfig value disable

Confirm that the value is correct by typing:

list sys db provision.1nicautoconfig

The return value should be disable.

If you do not change this value, any time you reboot BIG-IP VE, the manually-configured static route will cause validation errors during load sys config.