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ubuntu:networking:dns:etc_resolv.conf

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ubuntu:networking:dns:etc_resolv.conf [2021/01/10 21:03] – [Common DNS configuration changes] peterubuntu:networking:dns:etc_resolv.conf [2021/01/13 11:05] (current) – [Display /etc/resolv.conf] peter
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   * **/etc/resolv.conf** is nowadays maintained by systemd.   * **/etc/resolv.conf** is nowadays maintained by systemd.
   * If DNS resolver changes are needed then do this through systemd.   * If DNS resolver changes are needed then do this through systemd.
 +</WRAP>
 +
 +----
 +
 +===== List /etc/resolv.conf =====
 +
 +<code bash>
 +ls -al /etc/resolv.conf
 +</code>
 +
 +returns:
 +
 +<code bash>
 +lrwxrwxrwx 1 root root 32 Jan 10 18:50 /etc/resolv.conf -> /run/systemd/resolve/resolv.conf
 +</code>
 +
 +<WRAP info>
 +**NOTE:**  This shows that **/etc/resolv.conf** is a symlink to **/run/systemd/resolve/resolv.conf**.
 +
 +It may instead be a symlink to **/run/systemd/resolve/stub-resolv.conf**.  Also ok.
 +
 +If not then to fix try:
 +
 +<code bash>
 +sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
 +</code>
 +
 +</WRAP>
 +
 +----
 +
 +===== Display /etc/resolv.conf =====
 +
 +<code bash>
 +cat /etc/resolv.conf
 +</code>
 +
 +returns:
 +
 +<code bash>
 +# This file is managed by man:systemd-resolved(8). Do not edit.
 +#
 +# This is a dynamic resolv.conf file for connecting local clients directly to
 +# all known uplink DNS servers. This file lists all configured search domains.
 +#
 +# Third party programs must not access this file directly, but only through the
 +# symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a different way,
 +# replace this symlink by a static file or a different symlink.
 +#
 +# See man:systemd-resolved.service(8) for details about the supported modes of
 +# operation for /etc/resolv.conf.
 +
 +nameserver 192.168.1.1
 +search localdomain
 +</code>
 +
 +<WRAP info>
 +**NOTE:**  If the **nameserver** is **127.0.0.53** then this is fine too - It is set as default by Ubuntu.
 +
 +Usually it would only show as 192.168.1.1 or similar if DNS changes had been made in networking settings; such as in /etc/netplan.
 +
 </WRAP> </WRAP>
  
ubuntu/networking/dns/etc_resolv.conf.1610312593.txt.gz · Last modified: 2021/01/10 21:03 by peter

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