Questions tagged [systemd-networkd]
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65 questions
1 vote
1 answer
223 views
systemd-resolved will not use configured DNS -- "Network is down"
I have a small Linux box which acts as router/firewall/dns-server/dhcp-server/etc. for my network. I have recently reconfigured it to use systemd-networkd and systemd-resolved. Nearly everything ...
- 211
0 votes
1 answer
62 views
rkhunter warning in systemd-networkd?
sudo cat /var/log/rkhunter.log | grep -i warning [06:57:21] Checking for packet capturing applications [ Warning ] [06:57:21] Warning: Process '/usr/lib/systemd/systemd-networkd' (PID 620) is ...
0 votes
0 answers
367 views
systemd-networkd static leases in DHCPServer for ve
I would like to assign some predefined IP addresses (or addresses from a predefined pool) for virtual ethernets created for systemd-nspawn'ed VMs. Can someone give a hint, how this could be achieved? ...
- 103
0 votes
1 answer
2k views
Add default route on physical interface using `systemd-networkd`
In /lib/systemd/network/10-eth0.network on my client, I am failing to configure anything that can translate my manual command: sudo ip route add default via 192.168.7.1 dev eth0 where 192.168.7.1 is ...
- 135
0 votes
0 answers
128 views
KVM bridge not assign IP to vm which is already a bridge member
I have a problem of configuring a network bridge for VM which is not assigning IP address after use of systemback and dd import data to the new VM. Here is my systemd-networkd configuration ...
1 vote
0 answers
215 views
Configuring systemd-networkd for IPv6 on Azure
I'm new at both Azure and systemd-networkd, so bear with me. I've deployed an Ubuntu 24.04 VM on Azure, and have configured the Azure side of things to a state that appears fully correct — I have both ...
- 217
2 votes
0 answers
1k views
How to retrieve DHCP information when using systemd-networkd?
Our Ubuntu 22 machines have networking configured using netplan and systemd-networkd. Network manager (and therefore nmcli & co.) are not installed. In a bash script, I am looking to extract ...
- 1,843
0 votes
1 answer
90 views
Which piece of software touches network configuration files of a VM in a vagrant-libvirt setup with kvm/qemu?
Which element in a vagrant-libvirt-qemu/kvm-chain is responsible to actually configure the VM? Like editing the network configuration files. Wouldn't that totally depend on the details of the OS of ...
- 603
2 votes
0 answers
815 views
One-shot DHCP request with systemd-networkd
How to/is it possible to make a one-shot DHCP request without writing/modifying a .network file for the interface? With dhclient, you could just run dhclient enp23s0f4 to obtain an IP address. I am ...
- 131
0 votes
1 answer
249 views
Difficulty setting up a cross-system docker network in NixOS
I've got a collection of docker services that run across multiple servers in a local physical stack. For reasons, I'm trying to keep the exposed ports as minimal and secured as possible (using ...
- 21
2 votes
1 answer
883 views
How can I run a script when a specific network interface is up with systemd/networkctl?
I need to run a script when a specific network interface is brought up with systemd/networkctl, i.e. each time it enters state "routable". When the interface goes up or down, the device ...
- 213
0 votes
1 answer
332 views
systemd-networkd: add second gateway for the second public ip
What is the recipe for adding a second gateway/route for the second public ip that the machine has for systemd-networkd (on the single interface that is used)? This is Alma9/systemd-252 L.E. to ...
- 166
1 vote
1 answer
367 views
Applying initcwn/ initrwnd to routes from DHCP
I am using Amazon Linux 2023 (which is based on Fedora and uses systemd-networkd for DHCP). ip route show shows routes like default via 10.0.0.1 dev enX0 proto dhcp src 10.0.0.211 metric 1024 I would ...
1 vote
0 answers
1k views
Contents of /etc/systemd/network/10-eth0.network gets overwritten on reboot
I am using a VMware photon OS VM. I want to configure a secondary IP address for my eth0 interface. And following the lead in : How to configure interface aliases using Systemd-Networkd? I added an ...
- 111
0 votes
0 answers
2k views
How to overwrite an interface config with match option in netplan?
I am using an Ubuntu 18 on a virtualbox machine and I am trying to overwrite a netplan config related to an interface. There are two config files located in /etc/netplan/. 50-cloud-init.yaml: network: ...
- 43
1 vote
1 answer
922 views
untagged traffic must become tagged traffic after passing through the bridge
I'm trying to achieve something simple. I have a machine which has a single physical port enp89s0. this is connected to the native VLAN (VLAN=1). I need to create VMs and place them on a separate VLAN=...
- 277
0 votes
2 answers
5k views
linux bridge vlan-aware and untagged traffic
I have the following use case. A machine which runs VMs that have to be located to a VLAN with ID 166. The traffic must go out of an physical interface enp89s0 which is connected to the primary ...
- 277
2 votes
0 answers
402 views
systemd-nspawn can't auto login
I'm trying to config auto login for my nspawn container and I created /etc/systemd/system/[email protected]/autologin.conf and inside of that I wrote this config: [Service] ExecStart= ...
- 21
0 votes
1 answer
941 views
Ubuntu 22.04 netns with veth connected to bridge unable to ping gateway
Hey guys this is probably just something stupid I'm missing, but I'm having trouble setting up a net namespace to use for my VPN. The weird part is that this script/setup was working, and has suddenly ...
- 27
3 votes
0 answers
4k views
Why is my systemd-networkd not aquiring an IP address via DHCP?
On my notebook running Gentoo, I set up the following things: Kernel with all necessary settings and modules WPA_Supplicant Systemd Systemd-Networkd Almost everything works as expected, the ...
- 135
4 votes
0 answers
1k views
Setting up multiple IPv6 routes over a single interface on Linux
tldr; A LAN device is able to get 2 separate internet connection (1 NATted from ISP Router, 1 from manual PPP connection). Able to separate ISP-WAN and PPP-WAN IPv4 into 2 routes using ip rules but ...
- 61
3 votes
1 answer
3k views
Bridge on a bonded interface with systemd-networkd
So I recently changed my server from a Debian based distribution that used the old ifupdown style configs over to systemd-networkd. What I want is, my two primary interfaces, bonded, and then a bridge ...
- 71
4 votes
1 answer
4k views
systemd-networkd not launching DHCPv6 client
The systemd-networkd documentation makes this statement... By enabling DHCPv6 support explicitly, the DHCPv6 client will be started regardless of the presence of routers on the link This is the ...
- 6,224
4 votes
2 answers
6k views
What controls the NIC naming convention after fresh Ubuntu 20.04 install?
This is a fresh install Ubuntu server 20.04.04 system. I'm using networkd and netplan to configure networking. I did not do any custom install steps, just loaded the .iso and installed Ubuntu server ...
- 722
0 votes
0 answers
2k views
IPv6 forwarding enabled but not working. How to get it to work?
My system is running Debian GNU/Linux 11 (bullseye) My network is configured with two interfaces, one to my ISP and one to my lan. I am using systemd-networkd to manage the interfaces. The problem is ...
0 votes
1 answer
1k views
Networkctl: Manual VLAN IP Link
I've a network interface eth0 that carries my main network as untagged traffic and a "management" network with tagged traffic with the id 18. This is how it's configured: 10-eth0.network: [...
- 1,398
0 votes
1 answer
2k views
Can't connect container with bridge to the internet using networkd
i have a server running Ubuntu 20.04 LTS connected through one physical ethernet interface to the internet. My prodiver assigned me a static primary IP4 (i will use A.A.A.A here for this IP), so my ...
- 26
0 votes
0 answers
4k views
Force DHCP client to use only IPv4
I have Linux client (running systemd-networkd, version 244), and I want to configure it's network only with IPv4. However, the DHCP server offers both v4 and v6. Is it possible to limit the client to ...
1 vote
0 answers
409 views
Systemd-networkd fails IPv6 autoconfig where ifupdown succeeds
Title is a bit vague, since I do not know what is going on. I want to switch to systemd-networkd, and I want it to autoconfigure both IPv4 and IPv6. I come from ifupdown, with the following config: # ...
- 458
2 votes
0 answers
1k views
OpenSSH server on Ubuntu Impish fails to start after reboot, only manual restart works
Preface and issue I have an Ubuntu 21.10 (Impish) server, which network is managed by netplan and systemd-networkd. My /etc/netplan/01-netcfg.yaml looks like this: network: version: 2 renderer: ...
- 2,186
0 votes
1 answer
1k views
lost network interface to systemd-networkd. What is going on?
I have a systemd host with 4 ethernet ports. one port is reserved for isolated containers. It is set as: # /etc/systemd/network/20-eth3-reserved.network [Match] Name=eth3 [Link] Unmanaged=yes I also ...
- 341
1 vote
1 answer
1k views
systemd-networkd configuration not adding any routes and not finishing configuration
With systemd 241 on Debian 10, I am attempting to configure systemd-networkd style networking for an edge server. The problem I have is that when systemd-networkd starts up, it does not add the v4 or ...
- 40.1k
2 votes
1 answer
1k views
Route untagged vlan to a tagged vlan with nftables
I have played around a lot with nftables, but I am stuck on this problem for the entire day. I have a wifi ssid that gets tagged vlan20. This part works, and I can see that dnsmasq is assigning ip ...
- 21
0 votes
1 answer
809 views
systemd-networkd: how to elegantly switch between creating a wireless access point and connecting to a wifi network
I'm working on a headless IoT device that creates its own access point so that the user can access its web UI and do necessary configuration. The system uses networkd but I'm not very attached to it ...
- 101
1 vote
2 answers
2k views
How to tag IPv4 and IPv6 packets with different VLAN tags on a Linux box?
I want to tag incoming IPv4 and IPv6 packets from a dual stack enabled connection with different VLAN tags, e.g. IPv4 packets should go to VLAN4 and IPv6 packets should go to VLAN6. To be more general,...
- 505
1 vote
1 answer
3k views
How to translate "ip route add local 0.0.0.0/0 dev lo table 100" to systemd-networkd?
I am trying to setup a software router with the goal of routing packets to a proxy server on the router. The tutorial I am reading has the following routing rules: ip rule add fwmark 1 table 100 ip ...
- 121
3 votes
3 answers
17k views
VLAN support with libvirt for linux bridge to virtual machines
I'm using systemd-networkd to configure network interfaces managed by libvirt for KVM (Kernel-based Virtual Machine) with Debian Bullseye on all nodes. I want to have transparent VLAN support on the ...
- 505
0 votes
1 answer
1k views
WireGuard via systemd-networkd but with /etc/wireguard/wg0.conf
Is there any solution to use /etc/wireguard/wg0.conf for both, wg-quick and systemd-networkd. Following this example I have to duplicate configuration, but I want to store config in one place. How to ...
- 161
2 votes
1 answer
2k views
systemd-nspawn container DNS not working
I'm trying to launch a container with systemd-nspawn (from the systemd-container package, version 241), but the container is not able to resolve host names. The host environment is PureOS 9.0, which ...
- 203
1 vote
1 answer
3k views
Netplan - Configure two interfaces on same network
I have a set of Ubuntu 18.04.5 LTS servers with two interfaces each. eno1 - 1g management interface eno5 - 10g data interface Both interfaces are in the same L2 subnet (10.98.16.0/22). My issue is ...
- 21
0 votes
1 answer
1k views
How to drop dhcp ip assignated when using clevis/tang on Ubuntu 20.04
I unlock my drive with clevis/tang on an Ubuntu server (NBDE). It works fine, but even if my server is configured to use a static ip in /etc/netplan/01-netcfg.yaml, my network interface also listen on ...
- 511
2 votes
1 answer
4k views
How to create dummy interface in /etc/systemd/network?
I am trying to create an equivalent to the following for systemd. auto strongswan0 iface strongswan0 inet static address 10.0.2.1/24 pre-up ip link add strongswan0 type dummy
- 891
5 votes
1 answer
8k views
How to configure interface aliases using Systemd-Networkd?
I am trying to port the following alias from /etc/network/interfaces to /etc/systemd/network/eth0.network. auto eth0:1 iface eth0:1 inet static address 10.0.2.1/24
- 891
0 votes
0 answers
2k views
Add DNS options to systemd-resolved /etc/resolv.conf
I am using systemd-networkd and systemd-resolved. I have /etc/resolv.conf being a symlink to /run/systemd/resolve/stub-resolv.conf as recommended. I guess that /run/systemd/resolve/stub-resolv.conf ...
0 votes
1 answer
2k views
Add IP addresses to systemd-network besides netplan
On an Ubuntu 20.04 server, netplan is used to configure the network. It can configure ordinary static IP addresses but I need additional IPv6 addresses with preferred_lft=0. Netplan can't do that (...
- 143
1 vote
1 answer
4k views
Configuring DHCP lease when using systemd-networkd on Ubuntu 18.04 Server
we have an Ubuntu 18.04 dedicated server hosted by IONOS (1&1) and want to use one IPv4 and 2 IPv6 addresses. Recently we decided to switch from networking.service to systemd-networkd.service to ...
- 11
2 votes
1 answer
1k views
Stop Google Compute instance from configuring second network interface
I'm spinning up a VM in Google Compute Engine running Debian Buster, and configuring it with two network interfaces. The first uses an ephemeral IP config, and is assigned to a publicly routable ...
google-compute-engine
3 votes
2 answers
2k views
Failure to configure Wireguard device via systemd-networkd on Google Compute Engine VM
Debian Buster image on a Google Compute Engine VM, and I have this systemd-networkd config placed at /etc/systemd/network/wg0.netdev to configure a Wireguard device: [NetDev] Name=wg0 Kind=wireguard ...
2 votes
0 answers
748 views
systemd-networkd: Set DNS via CLI for managed link
I want to set the DNS for an interface managed by systemd-networkd via cli. The file system is mounted read-only, so is there way to achieve this without manipulating any files? I tried e.g.: ...
- 21
2 votes
2 answers
2k views
create alias for network link using systemd-networkd configuration
I want to add aliases to my network links to use them as short descriptions. I am configuring my interfaces using systemd-networkd, having systemd version 241 on a debian buster server. I've created ...
- 73