SonicOS 8 System

Technical Documentation>  Interfaces>  Interface settings IPv6>  Configuring Advanced IPv6 Interface Options and Multiple IPv6 Addresses
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Configuring Advanced IPv6 Interface Options and Multiple IPv6 Addresses

To modify Advanced IPv6 interface options or to configure multiple static IPv6 addresses

  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. Click the Advanced tab.

  5. In the IPv6 Addresses section, click Add to configure multiple static IPv6 addresses for the interface. The Add IPv6 Address dialog box is displayed.

    Multiple IPv6 addresses can only be added for an interface that is configured for Static IPv6 address mode. Multiple IPv6 addresses cannot be configured for Auto or DHCPv6 modes.

  6. Enter the additional IPv6 Address for the interface.

  7. Enter the Prefix Length for the address.

  8. Select Advertise Subnet Prefix of IPv6 Address to add a default prefix into the interface advertising prefix list. This prefix is the subnet prefix of interface IPv6 primary static address. This option helps all hosts on the link stay in the same subnet.

  9. Click OK.

    The following additional options can be configured on the Advanced tab under the Advanced Settings section.

  10. Select Disable all IPv6 Traffic on the Interface to stop the interface from handling all IPv6 traffic. Disabling IPv6 traffic can improve firewall performance for non-IPv6 traffic.

    If the firewall is deployed in a pure IPv4 environment, SonicWall recommends you to enable this option.

  11. Select Enable Listening to Router Advertisement to receive router advertisement. If disabled, the interface filters all incoming Router Advertisement messages, which can enhance security by eliminating the possibility of receiving malicious network parameters (for example, prefix information or default gateway). By default, this option is selected.

    When this option is disabled, all assigned autonomous IPv6 address are removed from this interface.

    When this option is selected the Enable Stateless Address Autoconfiguration option becomes available.

  12. Select Enable Stateless Address Autoconfiguration to allow autonomous IPv6 addresses to be assigned to this interface. If disabled, all assigned autonomous IPv6 address are removed from this interface.

    This option is not visible for Auto mode. In Auto mode, it is always enabled.

  13. Enter a numeric value for Duplicate Address Detection Transmits to specify the number of consecutive Neighbor Solicitation messages sent while performing Duplicate Address Detection (DAD) before assigning a tentative address to the interface. The minimum number is 0, the maximum is 9, and the default is 1. A value of 0 indicates that DAD is not performed on the interface.

  14. In Neighbor Discovery Base Reachable Time, enter a base value, in seconds, to use for computing the random Reachable Time value for the interface. The minimum value is 0, the maximum is 9999, and the default is 30.

    A value of 0 indicates the parameter is unspecified, and the global settings from the Neighbor Discovery page is used. If RA is enabled on this interface the value provided in the Reachable Time option in the Router Advertisement tab is used.

  15. Click OK.