====== Ubuntu - Networking - DNS - Troubleshooting - DNS Resolver Not Working ======

===== Restart the Resolver Service  =====

<code bash>
sudo systemctl restart resolvconf.service
</code>

----

===== Check Status =====

<code bash>
systemd-resolve --status
</code>

----

===== Check logs =====

<code bash>
sudo journalctl -u systemd-resolved
</code>

----

===== Check where /etc/resolve links =====

<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 alert>
**ALERT:**  If for any reason it does not link to **/run/systemd/resolve/resolv.conf** then run :

<code bash>
sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
</code>

Alternatively, try:

<code bash>
sudo ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
</code>



</WRAP>


----

try

<code bash>
sudo dpkg-reconfigure resolvconf
</code>

----


Only if above does not work, try:

Edit /etc/systemd/resolved.conf and add entry:

<file bash /etc/systemd/resolved.conf>
[Resolve] 
DNS=192.168.1.1
</file>

----


===== References =====

https://wiki.archlinux.org/index.php/Systemd-resolved

https://www.freedesktop.org/software/systemd/man/resolved.conf.html

https://man.archlinux.org/man/systemd-resolved.8#/ETC/RESOLV.CONF