NETGEAR ProSafe FVS336Gv2 Reference Manual page 178

ProSAFE Dual WAN Gigabit WAN SSL VPN Firewall FVS336Gv2
If you enabled the ISP DHCPv6 server to assign a prefix through prefix delegation to the
VPN firewall (see Use a DHCPv6 Server to Configure an IPv6 Internet Connection
Automatically on page 90), the advertisement prefixes that are based on the ISPs
assignment are shown in the List of Prefixes to Advertise table. Advertisement prefixes
that you add manually also show in the table.
9. Under the List of Prefixes to Advertise table, click the Add button.
The Add Advertise Prefixes screen displays.
Configure the IPv6 LAN Settings
177