How to configure a SonicWall WAN interface with autonomous IPv6 address
03/26/2020 
14 
13636
DESCRIPTION:
This article explains how to configure a SonicWall WAN interface with autonomous IPv6 address
RESOLUTION:
In this article, the firewall is connected to the router which advertises the IPv6 prefix to the network.
Procedure:
Auto mode: the firewall listens to the network and receives prefix information from neighboring routers. Firewall will combine the prefix and the unique Interface Identifier address to assign an IPv6 stateless address to the WAN interface. Default gateway selection in this mode is based on the information collected from on-link routers.
To configure an interface in IPv6 Auto mode, perform the following steps:
1. Navigate to the Network > Interfaces page.
2. Click on the IPv6 radio button at the top right corner of the page.
3. Click on the Configure icon for the interface you want to configure an IPv6 address for. The Edit Interface window displays. The following options can be set when configuring the interface in Auto mode
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After configuration and back to the Network > Interfaces page, we can see the configured Autonomous IPv6 address.
Resolution for SonicOS 6.5
This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware. The below resolution is for customers using SonicOS 6.5 firmware.
In this article, the firewall is connected to the router which advertises the IPv6 prefix to the network.
Procedure:
Auto mode: The firewall listens to the network and receives prefix information from neighboring routers. Firewall will combine the prefix and the unique Interface Identifier address to assign an IPv6 stateless address to the WAN interface. Default gateway selection in this mode is based on the information collected from on-link routers.
To configure an interface in IPv6 Auto mode, perform the following steps:
- Login to SonicWall Management Interface
- Click on Manage in the top navigation menu
- Navigate to the Network > Interfaces page.
- Click on the IPv6 radio button at the top right corner of the page.
- Click on the Configure icon for the interface you want to configure an IPv6 address for. The Edit Interface window displays.
- Set the IP Assignment to Auto
After configuration and back to the Network > Interfaces page, we can see the configured Autonomous IPv6 address.
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