Configures the virtual IP address of a VLAN. After the IP aware function
of a VLAN is enabled, the VLAN needs to obtain the gateway MAC address
through the ARP request and use the configured virtual IP address as the
source IP address of the ARP request.
The indexes of this entry are hwIpAwareVirtualIPVlanID, hwIpAwareVirtualIP,
and hwIpAwareVirtualIPMask.