On 7/23/24 7:31 AM, François Patte wrote:
Bonjour,
I try to change the default dns configured by my ISP on a fedora 40.
Once upon a time it was easy: just change the file /etc/resolv.conf....
now....
So, according to some information got from the internet, I created a
directory
/usr/lib/systemd/resolved.conf.d/
then wrote a file in this directory named fdn.conf with:
[Resolve]
DNS=80.67.169.12#ns0.fdn.fr 2001:910:800::12#ns0.fdn.fr
DNSSEC=yes
DNSOverTLS=yes
and restarted systemd-resolved.service (and NetworkManager), but this
does not worked...
dig -x 2a01:cb14:81da:2800:3649:5bff:fe29:3ce0
returns:
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
What did I miss?
Thank you.
I've had great luck with either using nmtui to change my DNS (the
easiest way).
You can use Cockpit to do it as well. Enable the cockpit socket:
sudo systemctl enable cockpit.socket --now
Open your browser and go to localhost:9090
Escalate privileges, then go to networking and change it there.
You can also do it from the command line:
Let's say you want to use the Google DNS servers 8.8.8.8 and 8.8.4.4,
and you want to ignore any DNS server which is defined in DHCP. Here's
the syntax. It's three commands. Replace [interface] with the actual
interface you want to change:
nmcli con mod [interface] ipv4.dns "8.8.8.8 8.8.4.4"
ipv4.ignore-auto-dns yes
nmcli con down [interface]
nmcli con up [interface]
That *should* get you what you want. Holler if you have any questions.
--
Thomas
--
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