Configuring an Interface for Auto Mode

Auto mode utilities IPv6’s Stateless Address Autoconfiguration to assign IPv6 address. This mode does not require any manual address configuration by the network administrator. The Security Appliance listens to the network and receives prefix information from neighboring routers. The IPv6 Stateless Address Autoconfiguration feature performs all configuration details, such as IPv6 address assignment, address deleting for address conflicting or lifetime expiration, and default gateway selection based on the information collected from on-link router.

Auto mode can only be configured for the WAN zone. For security consideration, Auto mode is not available on LAN zone interface.

In this mode, two types of IPv6 addresses can be assigned:

• Automatic Address - The default link-local address of the interface. It never times out and cannot be edited or deleted.

• Autonomous Address - Assigned from Stateless Address Autoconfiguration. Users can manually delete the address if they do not want to wait for its valid lifetime to expire.

To configure an IPv6 interface for Auto mode

1. Navigate to Network > System > Interfaces > Interfaces Settings.

2. On the Interfaces Settings page, click IPv6.

3. Hover over an interface that you want to configure and click the Edit icon. The Edit Interface dialog box is displayed.

4. In the IP Assignment drop-down menu, select Auto.

5. Optionally, you can configure Management login or User Login.

6. Optionally, you can enter a numeric value for Duplicate Address Detection Transmits on the Advanced tab to specify the number of consecutive Neighbor Solicitation messages sent while performing Duplicate Address Detection (DAD) before assigning a tentative address to interface. A value of 0 indicates that DAD is not performed on the interface.

7. Click OK.