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Questions tagged [systemd-resolved]

Systemd Network Name Resolution manager

systemd-resolved.service / systemd-resolved

systemd-resolved is a system service that provides network name resolution to local applications. It implements a caching and validating DNS/DNSSEC stub resolver, as well as an LLMNR resolver and responder.

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How to configure systemd-resolved and systemd-networkd to use local DNS server for resolving local domains and remote DNS server for remote domains?

I'm connected to local area network with access to the Internet through gateway. There is DNS server in local network which is capable of resolving hostnames of computers from local network. I would like to configure systemd-resolved and…
Piotr Dobrogost
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Override Ubuntu 20.04 DNS using systemd-resolved

How do I configure an Ubuntu 20.04 system so it overrides the default DNS? It seems that by default there is a global and per-link DNS setting. I tried a couple of things that did not work: Edit /etc/systemd/resolved.conf with the DNS…
Serge Fonville
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What's the difference between /run/systemd/resolve/stub-resolv.conf and /run/systemd/resolve/resolv.conf?

For configuring custom DNS servers in a brand new Kubuntu 19.10 laptop it wasn't enough with adding to /etc/systemd/resolved.conf: DNS=77.88.8.7 77.88.8.3 #Yandex's DNS with no porn even on Google Images I also had to change the symlink of…
Nico Rodsevich
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What is the difference between resolvconf, systemd-resolve, and avahi?

I'm currently working on a project that has required some DNS troubleshooting. However I am fairly new to the wonderful world of networking and I'm at a bit of a loss as to where to begin. My specific problem probably belongs on the Raspberry Pi…
Toshi Taperek
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How to configure systemd-resolved for mdns multicast dns on local network?

Ubuntu 18 I've done a ton of research and am close to pulling this picture together but can't quite understand: How can I configure systemd-resolved for mdns? My goal specifically: to bring up a server on a 10.0.0.0/16 network for the new server to…
Duke Dougal
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How to allow systemd-resolved to listen to an interface other than loopback?

systemd-resolved is a daemon that, among other things, acts as a DNS server by listening IP address 127.0.0.53 on the local loopback interface. I would like to let the daemon listen to another interface. My use-case is to expose it to docker…
Matthieu Moy
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DNS broken when using ifupdown and systemd-resolved after upgrade to Ubuntu 22.04

TL;DR sudo cp -p /etc/network/if-up.d/resolved /etc/network/if-up.d/.resolved.broken-orig #Edit /etc/network/if-up.d/resolved and take out the extraneous quotes on lines 48 and 52 #The fix looks like: diff /etc/network/if-up.d/.resolved.broken-orig…
Spokane_is_actually_kinda_okay
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Why doesn't systemd-resolved use my local DNS server?

I'm using a local BIND9 server to host some local dns records. When trying to dig for a local domain name I can't find it if I don't explicitly tell dig to use my local BIND9 server. user@heimdal:~$ dig +short heimdal.lan.se user@heimdal:~$ dig…
Civing
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What is the recommended way to set a global DNS server override on a system using systemd-resolved?

I would like my newer GNU/Linux system (Ubuntu 18.04 LTS) to use a single, manually-configured, DNS server for all DNS queries. In the past, I could simply do echo "nameserver 1.1.1.1" | sudo tee /etc/resolv.conf to clobber the /etc/resolv.conf file…
M12
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What are DNS server, resolver and stub resolver?

https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html#Description says Additionally, systemd-resolved provides a local DNS stub listener on IP address 127.0.0.53 on the local loopback interface. Programs issuing DNS…
Tim
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Clarifying four modes of handling /etc/resolv.conf in systemd-resolved

I have read about systemd-resolved.service https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html and learnt four modes of handling…
netcaf
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How to make systemd-resolved stop trying to use offline DNS servers?

I have configured my DHCP server to supply two nameservers for redundancy, so that if one is offline the other one can be used. I have configured my PCs with systemd-resolved and according to resolvectl status it has picked up all the DNS servers…
Malvineous
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How do you remove bad DNS server IPs from systemd-resolved?

So I was testing a router and it added some random IPv6 addresses to all the machines on my network, including my DNS server. Somehow those IPs were broadcasted around as valid DNS servers (not sure how as only the real router sends IPv6 RA…
Malvineous
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How single-label dns lookup requests are handled by systemd-resolved?

I looked into the systemd-networkd and systemd-resolved: systemd.network(5) on manpages.ubuntu.com systemd-resolved.service(8) on manpages.ubuntu.com and I am confused by some words: systemd-resolved.service(8) Single-label names are routed to…
Solaroi Zeng
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How to correctly disable systemd-resolved on port 53 for avoiding clash with dnsmasq in Ubuntu 20.04…?

I'm trying to use dnsmasq on Ubuntu 20.04 and I get a port clash on port 53 with systemd-resolved. So I've found a few suggestions on solutions, but they seem to be dated or not applicable to my case. If I disable systemd-resolved, everything comes…
Viktor Hedefalk
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