How to set up your FortiWAN Configuring Network Interface (Network Setting)
DNS Server
The recursive DNS servers used to serve the IPv6 subnet you are
configuring (the Subnet field below). FortiWAN conveys it through router
advertisement (RA) messages. Depending on the subnet type (DMZ-
sided or LAN-sided), this could be the DNS server serving the global IPv6
subnets (public) that your ISP provides or the DNS server for the unique
local IPv6 subnet (private).
l
Single DNS server: the IPv6 addresses defined in System > Network
Setting > DNS Server > IPv6 Domain Name Server are listed here
for your options
l
ALL: answer the hosts with all the defined IPv6 DNS servers information.
l
None: answer the hosts without containing any IPv6 DNS server
information.
This option is only available for IPv6 LAN private subnet. For the DMZ-
sided subnets (hosts in the subnets are supposed to be deployed with
IPv6 global addresses), system behaves answering the hosts with all the
defined DNZ servers information.
Subnet
The subnet deployed on the port (LAN port or DMZ port) you are
configuring. SLAAC services the subnet. The subnet is used by SLAAC
to allocate the prefix information to the hosts, so that an IPv6 address
can be determined (with the Host ID) on a host. Depending on the
subnet type, it could be a global IPv6 subnet or a unique local IPv6
subnet.
DNS Search List
A search list to be used when trying to resolve a name by means of the
DNS. This option is only available for IPv6 LAN private subnet.
Stateful IPv6 addressing: DHCPv6
To enable the stateful IPv6 addressing for the "IPv6 Basic Subnets" or "IPv6 (IPs) in DMZ", you are required to
enable and configure both SLAAC and DHCPv6 on Web UI. FortiWAN will not respond for any Router
Advertisement (RA) if it SLAAC is disabled. The stateful IPv6 addressing via DHCPv6 requires RA to discover the
default gateway for hosts, and therefor hosts fail to get default gateway if SLAAC is disabled. Please enable and
configure the SLAAC as the introduction above if DHCPv6 is enable and make sure the network interface of a host is
sat to automatically get the IPv6 address through DHCPv6.
FortiWAN acts a DHCPv6 server on the specified LAN port or DMZ port if checkbox Enable DHCPv6 Service is
checked. All the hosts running as DHCPv6 client could gain the routing and DNS information from DHCPv6 server.
DHCPv6 provides configuring and management to the IPv6 addresses to be assigned, which is a shortage of SLAAC.
62 FortiWAN Handbook
Fortinet Technologies Inc.
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