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DNS Forwarding
--------------
Use DNS forwarding if you want your router to function as a DNS server for the
local network. There are several options, the easiest being 'forward all
traffic to the system DNS server(s)' (defined with set system name-server):
.. code-block:: sh
set service dns forwarding system
Manually setting DNS servers for forwarding:
.. code-block:: sh
set service dns forwarding name-server 8.8.8.8
set service dns forwarding name-server 8.8.4.4
Manually setting DNS servers with IPv6 connectivity:
.. code-block:: sh
set service dns forwarding name-server 2001:4860:4860::8888
set service dns forwarding name-server 2001:4860:4860::8844
Setting a forwarding DNS server for a specific domain:
.. code-block:: sh
set service dns forwarding domain example.com server 192.0.2.1
Set which networks or clients are allowed to query the DNS Server. Allow from all:
.. code-block:: sh
set service dns forwarding allow-from 0.0.0.0/0
Example 1
^^^^^^^^^
Router with two interfaces eth0 (WAN link) and eth1 (LAN). Split DNS for example.com.
* DNS request for a local domain (example.com) get forwarded to 192.0.2.1
* Other DNS requests are forwarded to Google's DNS servers.
* The IP address for the LAN interface is 192.168.0.1.
.. code-block:: sh
set service dns forwarding domain example.com server 192.0.2.1
set service dns forwarding name-server 8.8.8.8
set service dns forwarding name-server 8.8.4.4
set service dns forwarding listen-address 192.168.0.1
set service dns forwarding allow-from 0.0.0.0/0
Example 2
^^^^^^^^^
Same as example 1 but with additional IPv6 addresses for Google's public DNS
servers.
The IP addresses for the LAN interface are 192.168.0.1 and 2001:db8::1
.. code-block:: sh
set service dns forwarding domain example.com server 192.0.2.1
set service dns forwarding name-server 8.8.8.8
set service dns forwarding name-server 8.8.4.4
set service dns forwarding name-server 2001:4860:4860::8888
set service dns forwarding name-server 2001:4860:4860::8844
set service dns forwarding listen-address 2001:db8::1
set service dns forwarding listen-address 192.168.0.1
set service dns forwarding allow-from 0.0.0.0/0
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