User Guide     402
Configuring Layer 3 Interfaces Layer 3 Interface Configurations
DHCP Option 12 If you select DHCP as the IP Address Mode, configure the Option 12 here.
DHCP Option 12 is used to specify the client’s name.
2)  In the Secondary IP List section, click   to add a secondary IP for the specified 
interface which allows you to have two logical subnets. Then click Create.
IP Address  Specify the secondary IP address of the interface.
Subnet Mask Specify the subnet mask of the secondary IP address.
3)  (Optional) In the Secondary IP List section, you can view the corresponding secondary 
IP entry you have created.
2.1.3  Configuring IPv6 Parameters of the Interface
In 
Figure 2-1
, you can view the corresponding interface entry you have created in the 
Interface List section. On the corresponding interface entry, click Edit IPv6 to load the 
following page and configure the IPv6 parameters of the interface.