Questions tagged [systemd-networkd]

For questions pertaining to systemd-networkd, a system deamon that manages network configurations. Use this tag for questions about systemd-networkd itself, using systemd-networkd, or questions about issues arising from network configurations managed by systemd-networkd.

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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 ...
Piotr Dobrogost's user avatar
59 votes
3 answers
47k views

How exactly are NetworkManager, networkd, netplan, ifupdown2, and iproute2 interacting?

I am learning about Linux networking on my Kubuntu 18.04 workstation, and I see there that both NetworkManager and networkd-dispatcher are running: oleg@eclectic:~$ sudo ps -ef | grep -i net root ...
Oleg Pryadko's user avatar
  • 2,380
32 votes
6 answers
35k views

Debian systemd network-online.target not working?

I'm trying to create a systemd service on Debian Jessie. I need it to start after network-online.target is reached. The problem is network-online.target fires at the same time as network.target and ...
10robinho's user avatar
  • 10.1k
24 votes
1 answer
69k views

systemd-networkd - how to force new configuration without reboot?

On my Arch box, I had a network bridge. The goal was to remove the bridge and to only use the network adapter not bridged. In order to do so, I removed all the *.netdev and *.network configuration ...
vic's user avatar
  • 2,092
22 votes
3 answers
11k views

How can I make my user services wait till the network is online?

I have written a couple of systemd user service files which I want users to enable and which need a working network connection. I thought that would be as easy as: Wants=network-online.target After=...
Lev Levitsky's user avatar
  • 1,037
19 votes
2 answers
20k views

Why are my cloned linux VMs fighting for the same IP

I've cloned two vSphere VMs off of an Ubuntu 17.10 template. After boot, they both claim the same IP and fight for it (ssh connections break off as the IP switches between them). The hostnames and ...
wickedchicken's user avatar
18 votes
1 answer
16k views

avahi-daemon withdraws IP address from my network interface

I am running an Arch Linux server in my local network. It has avahi-daemon running on it to advertise some services (like a print server). It has happened for the second time now that my server was ...
cdauth's user avatar
  • 1,447
14 votes
5 answers
28k views

systemd-networkd-wait-online failure

The default openvpn-server configuration file depends on systemd-networkd-wait-online, which times out with error: systemd-networkd-wait-online[279]: Event loop failed: Connection timed out My ...
Fabio's user avatar
  • 261
13 votes
3 answers
10k views

With systemd-networkd, perform an action upon network configuration change

I am switching from Debian’s ifupdown to systemd-networkd, and it mostly works fine. One missing bit is that upon every network change, I want to call killall -ARLM tinc, so that my VPN is going up in ...
Joachim Breitner's user avatar
12 votes
1 answer
28k views

How to add a static route in systemd-networkd?

I have a host which is on 192.168.0.0/24 with an IP of 192.168.0.13. Its DHCP-provided gateway is 192.168.0.254. The configuration is done via systemd-networkd and the issue below is present at ...
WoJ's user avatar
  • 1,515
11 votes
3 answers
16k views

How do I check DHCP lease time in systemd-networkd?

How do I find the DHCP lease time when I am using systemd-networkd? My network is defined in /etc/systemd/network/eth0.network: [Match] Name=eth0 [Network] DHCP=yes There are other question on ...
user avatar
10 votes
5 answers
16k views

Predictable Network Interface Names break vm migration

How do you reset /etc/networking/interfaces when using "predictable network interface names"? Versions of Ubuntu older than 15.10 use network adapter names like: eth0 eth1 eth2 Replacing a ...
spuder's user avatar
  • 18k
9 votes
2 answers
3k views

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-...
Solaroi Zeng's user avatar
9 votes
3 answers
16k views

mount samba shares at boot with systemd

I have some Samba shares that I want to mount at boot time. They're not needed for anything immediately, but I'd like them to be available when I first access them. I've tried using a .mount file ...
jpkotta's user avatar
  • 433
8 votes
5 answers
15k views

Systemd-networkd: Run script after DHCP client acquires new address

I am on ubuntu 18.04 server. I need to run a script that updates an IP address on CloudFlare (kind of DynDNS script). In previous versions I could do this with a DHCLIENT exit hooks for the interface ...
alexander's user avatar
8 votes
0 answers
8k views

Enabling DHCP for IPv6 in netplan with networkd doesn't seem to do anything

I'm currently configuring the network interfaces for a Ubuntu 18.04 server, using netplan with the networkd backend. My hosting provider provides me with an IPv4 and an IPv6 for this server, however ...
Brendan Abolivier's user avatar
7 votes
2 answers
7k views

Making hostapd work with systemd-networkd using a bridge

I have two ethernet ports and one wireless port on a router I am setting up. I am using systemd-networkd. I am renaming the ports first then creating a bridge then am bridging one of the the ...
DKebler's user avatar
  • 282
7 votes
2 answers
6k views

How to add static ipv6 route with systemd-networkd

I'm trying to achieve the equivalent of the ip command below via networkd without success. ip route add default via fe80::1 dev eth0 My networkd configuration looks like below and brings up the ...
uvcrew's user avatar
  • 73
7 votes
1 answer
4k views

systemd-networkd default static address if dhcp fails

Is there a way to configure the systemd-networkd.service to automatically switch over to a static IP configuration if a DHCP server is not present? Or if systemd-networkd doesn't support this ...
Matt Schuckmann's user avatar
7 votes
2 answers
3k views

systemd-networkd DHCPServer configuring static lease

Does systemd-networkd DHCPServer support configure static lease based on for example mac addresses? If yes how? The systemd-networkd documentation doesn't mention anything about it.
R.J's user avatar
  • 188
7 votes
1 answer
7k views

What are link "scopes" in systemd-resolved?

While trying to fix a DNS issue with NetworkManager's ModemManager on Ubuntu, I came across this difference in the output of systemd-resolve --status when connected. (ping ip works, manually editing /...
tudor -Reinstate Monica-'s user avatar
6 votes
1 answer
18k views

Configuring a bridge interface with systemd-networkd

I'm attempting to create a bridge interface in Clear Linux with systemd-network to ultimately use it for KVM. I've attempted to create the following files as part of this guide: /etc/systemd/network/...
bswinnerton's user avatar
6 votes
2 answers
4k views

systemd-resolved block a domain name

Using systemd-resolved how do I block, route, or resolve, a domain name to a black hole, or a nowhere address. Bonus points for subdomains as well. I tried a single domain in /etc/hosts: 127.0.0.1 ...
jmunsch's user avatar
  • 4,316
6 votes
1 answer
3k views

systemd-networkd delete cached dhcp-assigned ip address

Where are the IP addresses, assigned through systemd-networkd DHCP, cached? I have changed my router and have a totally different setup, including preferred addresses for hosts. My host (my ...
Nicole's user avatar
  • 201
6 votes
1 answer
3k views

How can I set device mode via networkd

How can I set mode to device (for example monitor/ap to wlan) via networkd deamon in .link file ??? Because I want to set bridge in .network of wlan device and I can't do it until I set it in ...
ceph3us's user avatar
  • 577
5 votes
1 answer
7k views

Set routing metrics for static IPs with systemd-networkd?

I recently set up a server with its network managed directly by systemd-networkd (nuked netplan.io and Network Manager) and gave it static IPs like this: /etc/systemd/network/10-ethernet.network [...
iBug's user avatar
  • 3,498
5 votes
3 answers
19k views

Is there a way to save current state of network configuration in linux into a datafile or set of ip commands like iptables-save?

Let's say I ran quite a few ip commands and ended up with a required network configuration, but I didn't save the command history. Instead of rewriting commands in a file or script again, is there a ...
GP92's user avatar
  • 805
5 votes
3 answers
5k views

systemd .link files not working

I'm running Armbian Buster on an Odroid HC2. Actually, my interfaces names looks like that : enx001e0632c19d for eth0, and wlx503eaa4a712a for wlan0. I would like to not use the predictive interfaces ...
amprxc's user avatar
  • 109
5 votes
1 answer
4k views

systemd: who setup lo interface without ifupdown?

What component / package is responsible bringing up lo network interface with systemd as PID1 without ifupdown package? In Debian, we have quite a lot of component to manage network, ifupdown, ...
Yasushi Shoji's user avatar
5 votes
1 answer
6k views

How to setup network subnet mask with systemd-networkd?

The systemd's systemd-networkd service enables to setup a networks using the .network unit files. However, as far as it is documented in the official man page (man systemd.network) it allows to ...
Omer Dagan's user avatar
5 votes
1 answer
16k views

Proper DNS suffix setup Ubuntu 17.04?

I have trouble getting DNS suffix to work properly Basically, I have jira.mycompany.local in the company DNS server mapped to 192.168.100.5 I want to be able to access it using both jira and jira....
Rob Audenaerde's user avatar
5 votes
1 answer
609 views

How can i find out which network interface managing solution is used on a given linux distribution in an easy and robust way?

I frequently find myself sitting in front of various different Linux installations and need to check or change network settings. They are different versions from different distributions (mostly debian ...
Sorontik's user avatar
4 votes
1 answer
1k views

new IP address whereas DHCP lease time not out

My embedded system uses systemd and gets its IP address via DHCP. The DHCP server uses lease time to give the same IP unique address to every computer on the network if lease time is respected. The ...
grorel's user avatar
  • 206
4 votes
1 answer
7k views

Setup VLAN on linux bridge for virtual machines with systemd

I want to switch to systemd and with this I have to setup the linux bridge for my virtual machines in KVM to use VLAN. Having Debian GNU/Linux 9.1 (stretch), using its systemd-networkd and libvirt. ...
Ingo's user avatar
  • 626
4 votes
1 answer
2k views

Why are IPV6 privacy extensions not working in Arch Linux?

I have native IPv6 via my ISP, with a routed /64 block. IPv6 is working on my internal network. (ie. I can ping ipv6.google.com) All devices on the network have IPv6 addresses allocated, and with the ...
sw1nn's user avatar
  • 163
4 votes
1 answer
3k views

systemd-networkd and networking service relation

I'm trying to understand the relation between networking service and systemd-networkd. I'm experimenting with ubuntu 20.01 server, which originally uses netplan to configure network. In some articles ...
golder3's user avatar
  • 1,054
4 votes
3 answers
4k views

Make systemd-resolved ignore a DNS server and only use the one I specify

I am experiencing an issue with DNS and to help narrow down the problem, I have been asked to configure my machine's DNS settings manually, only specifying one DNS server instead of the two returned ...
Malvineous's user avatar
  • 6,813
4 votes
1 answer
1k views

How to make docker.service wait for cni0.netdev bridge during systemd boot?

I'm running Ubuntu 18.04.1 LTS I have created a cni0.netdev and cni0.network file in /etc/systemd/network to create a virtual bridge to use for a local Kubernetes cluster/node. I have enabled ...
Jon Watte's user avatar
  • 159
4 votes
0 answers
3k views

Can systemd-networkd handle interfaces in network namespace?

I'm trying to configure systemd-networkd on an embedded system where wlan0 is in a separate network namespace. I'd like for systemd to configure and monitor the interaface so that related services ...
cj8scrambler's user avatar
4 votes
0 answers
324 views

systemd .slice unit to limit a service to a specific interface/network classifier

Running on CentOS 7 [systemd ~243 & cgroup v1], I would like to limit a service to one specific network interface. The target machine has multiple physical network interfaces. The service is ...
THX's user avatar
  • 317
4 votes
0 answers
651 views

per-link (VPN) systemd-resolved configuration but keep link unmanaged by systemd-networkd

Background I manage my WLAN interface through systemd-networkd and use systemd-resolved for the whole system. I have several VPN connections managed by OpenVPN or Openconnect. I have them properly ...
Ondřej Grover's user avatar
4 votes
3 answers
7k views

setup wireless router using systemd-networkd *.network files

I would like to configure an embedded device to behave as a wireless router, and I would like to achieve it preferably using networkd configuration files. I have two *.network files, a wired WAN ...
user2963756's user avatar
3 votes
2 answers
3k views

Stable-private IPv6 address with systemd-networkd

I am trying to setup an IPv6 stable-privacy adress on a box with systemd-networkd. The box is an rpi runnning archlinux-arm but this is the same than for archlinux So following the wiki @archlinux....
solsTiCe's user avatar
  • 844
3 votes
2 answers
3k views

Rename ether interface with systemd-networkd without reboot

I have a virtual Debian 11 server configured to be a router. On the router I use systemd-networkd to configure all of the network interfaces. When I add a (virtual) interface to the router the ...
Mr. Diba's user avatar
  • 390
3 votes
3 answers
1k views

Detect if current connection is metered without NetworkManager

Along with other developer I am creating a script to automatically update Linux systems as long as they are not connected to metered connections. But we have found that some systems would use "...
Alberto Salvia Novella's user avatar
3 votes
3 answers
10k views

Systemd Service Run When Network Interface Up/Down (eth0)

I would like to run a systemd service each each time eth0 goes up/down (perhaps a separate service for up and down). This value should change when the ethernet is plugged in. Does anybody know how to ...
ChrisVollo's user avatar
3 votes
1 answer
4k views

Is that possible for debian users to connect to network through systemd-networkd?

Systemd offers the ability to manage the network by itself without additional tools such as netctl or NetworkManager. I am running debian 8 and i need to configure my network using systemd-networkd ...
GAD3R's user avatar
  • 66.4k
3 votes
1 answer
1k views

How to bind a user-level systemd service to network events?

I want to bind a user systemd timer (or service) to network events. For example consider this service: [Unit] Description=shows if connection changed [Service] Type=oneshot Environment=DISPLAY=:0 ...
Zeta.Investigator's user avatar
3 votes
1 answer
2k views

Setting Ethernet interface with no address systemd-networkd

I am trying to figure out a way to tell systemd-networkd to bring up an interface with no IP address and force an operation state in networkctl. This is what the output of my networkctl command looks ...
AtomicPorkchop's user avatar
3 votes
1 answer
1k views

Systemd unit auto restart when network changes

I am using a Python script to make some connection to a remote server. This is my unit: [Unit] Description=... After=network.target [Service] ExecStart=/usr/bin/python... WorkingDirectory=/home/matej/...
Matthai's user avatar
  • 35

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