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 firewall 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.

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

The following diagram shows a sample topology for IPv6 configured in Auto mode.

Sample IPv6 Auto Mode Configuration

In this mode, two types of IPv6 address are possible to assign:

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Automatic Address - The interface default link-local address. It is never timed out and is not able to be edited or deleted.
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Autonomous Address - Assigned from Stateless Address Autoconfiguration. Users can manually delete the address if they do not want to wait for its valid lifetime expires.
To configure an IPv6 interface for Auto mode:
1
Navigate to the Network > Interfaces page.
2
Click on the IPv6 button at the top right corner of the page. IPv6 addresses for the appliance are displayed.
3
Click on the Configure icon for the interface you want to configure an IPv6 address for. The Edit Interface dialog displays.
4
In the IP Assignment drop-down menu, select Auto.

5
Optionally, you can select 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.
6
Click OK.