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.. _system-dns:
##########
System DNS
##########
This section describes configuring DNS on the system, namely:
* DNS name servers
* Domain search order
DNS name servers
================
.. cfgcmd:: set system name-server <address>
Use this command to specify a DNS server for the system to be used
for DNS lookups. More than one DNS server can be added, configuring
one at a time. Both IPv4 and IPv6 addresses are supported.
Example
-------
In this example, some *OpenNIC* servers are used, two IPv4 addresses
and two IPv6 addresses:
.. stop_vyoslinter
.. code-block:: none
set system name-server 176.9.37.132
set system name-server 195.10.195.195
set system name-server 2a01:4f8:161:3441::1
set system name-server 2a00:f826:8:2::195
.. start_vyoslinter
Domain search order
===================
In order for the system to use and complete unqualified host names, a
list can be defined which will be used for domain searches.
.. cfgcmd:: set system domain-search domain <domain>
Use this command to define domains, one at a time, so that the system
uses them to complete unqualified host names. Maximum: 6 entries.
.. note:: Domain names can include letters, numbers, hyphens and periods
with a maximum length of 253 characters.
Example
-------
The system is configured to attempt domain completion in the following
order: vyos.io (first), vyos.net (second) and vyos.network (last):
.. code-block:: none
set system domain-search domain vyos.io
set system domain-search domain vyos.net
set system domain-search domain vyos.network
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