On 26/10/2020 10:30, Tom Seewald wrote:
After upgrading to F33 I've noticed that sometimes my current DNS server switches to 1.1.1.1 instead of my
local DNS (192.168.1.1). This has happened both immediately after system boot, and once after several hours
of use. For my connection in Network Manager, under IPv4, I have "192.168.1.1, 1.1.1.1" in
"Other DNS Servers". My understanding is that this should cause the system to prefer 192.168.1.1,
and historically it has always consistently used 192.168.1.1 until the upgrade to F33. At first glace I don't
see any relevant messages in the system journal that indicate why it is falling back to 1.1.1.1. The output
of "resolvectl status" shows that 192.168.1.1 is listed above 1.1.1.1 both when it is correctly
using local dns and when it is spuriously switching to 1.1.1.1.
My current workaround is to restart the resolved service, which causes it to
switch back to the correct DNS server, however this is clearly not ideal.
Any ideas for fixing or troubleshooting this would be appreciated.
This would seem to indicate that at some time 192.168.1.1 failed to respond to
a DNS request.
I replicated this by using a firewall on a DNS server to block request.
Prior to the block I see
Current DNS Server: 192.168.1.142
DNS Servers: 192.168.1.142
192.168.1.1
After the block I see
Current DNS Server: 192.168.1.1
DNS Servers: 192.168.1.142
192.168.1.1
I don't see any reports in the journal that a DNS request failed to
192.168.1.142.
After removing the firewall block the Current DNS remains at 192.168.1.1. I
could not
find any configuration or settings that would have systemd-resolved reassess
access to
the "primary" DNS server.
What type of server is your server at 192.168.1.1?
---
The key to getting good answers is to ask good questions.
_______________________________________________
users mailing list -- users@lists.fedoraproject.org
To unsubscribe send an email to users-le...@lists.fedoraproject.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
