Systemd/networkd - Revision history

Adamcstephens: /* Debugging */ note runtime log level changing

2025-09-11T02:22:29Z

Debugging: note runtime log level changing

← Older revision		Revision as of 02:22, 11 September 2025
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	<syntaxhighlight lang="nix">		<syntaxhighlight lang="nix">
	systemd.services."systemd-networkd".environment.SYSTEMD_LOG_LEVEL = "debug";		systemd.services."systemd-networkd".environment.SYSTEMD_LOG_LEVEL = "debug";
			</syntaxhighlight>Log level can also be changed at runtime with<syntaxhighlight lang="bash">
			$ systemctl service-log-level systemd-networkd.service debug
			# or
			$ systemctl service-log-level systemd-networkd.service info
	</syntaxhighlight>		</syntaxhighlight>

Quitlox: Add note that limitation to systemd.network.netdevs was addressed as of systemd v257

2025-08-24T09:33:13Z

Add note that limitation to systemd.network.netdevs was addressed as of systemd v257

← Older revision		Revision as of 09:33, 24 August 2025
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	** Does not modify properties (e.g., MTU, VLAN ID, VXLAN ID, Wireguard Peers) of existing netdevs		** Does not modify properties (e.g., MTU, VLAN ID, VXLAN ID, Wireguard Peers) of existing netdevs
	*** https://github.com/systemd/systemd/issues/9627		*** https://github.com/systemd/systemd/issues/9627
			*** This should be fixed as of systemd v257 (https://github.com/systemd/systemd/pull/34909)

	=== network-online.target ===		=== network-online.target ===

Hexa: Interface renaming

2025-05-24T09:28:31Z

Interface renaming

← Older revision		Revision as of 09:28, 24 May 2025
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	Examples should be concise and give proper hints on how to achieve a reliably working <code>network-online.target</code>.		Examples should be concise and give proper hints on how to achieve a reliably working <code>network-online.target</code>.

			=== Interface Naming ===
			The name of an interface can be changed based on different matches. This is useful for pretty names (e.g. wan, lan), but also if you want to make sure that your interface name never changes. This might be useful because even with predictable interface naming your interface name can change, for example when you add a new PCIe card and indexing changes, or due to kernel changes the way your mainboard gets interpreted changes.<syntaxhighlight lang="nix">
			systemd.network.links."10-wan" = {
			# Check systemd.link(5) for other matchers
			matchConfig.Path = "pci-0000:09:00.0";
			linkConfig.Name = "wan";
			};
			</syntaxhighlight>

	=== DHCP/RA ===		=== DHCP/RA ===

Philipwilk: /* User configurations */ Add additional user configuration example that is significantly more recent

2025-05-06T12:58:08Z

User configurations: Add additional user configuration example that is significantly more recent

← Older revision		Revision as of 12:58, 6 May 2025
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	* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]		* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]
			* [https://github.com/philipwilk/nixos/blob/4fec9d73bfa7b1ecb490186522de38d25ee81e69/homelab/router/systemd.nix NixOS Unstable (25.04) Router (ipv4/ipv6 dual stack, dnssec+dnsovertls, NTP-rs)] by [https://github.com/philipwilk philipwilk]

	[[Category:systemd]]		[[Category:systemd]]
	[[Category:Networking]]		[[Category:Networking]]

Axka at 01:38, 26 January 2025

2025-01-26T01:38:07Z

← Older revision		Revision as of 01:38, 26 January 2025
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	<div style="margin-left: 2em; margin-bottom:1em">		<div style="margin-left: 2em; margin-bottom:1em">
	''More ~~information~~: [[Networking#Link aggregation]]''</div>		''More details: [[Networking#Link aggregation]]''</div>

	Given two hardlinks <code>enp2s0</code> and <code>enp3s0</code> create a virtual <code>bond0</code> interface using Dynamic LACP (802.3ad), hashing outgoing packets using a packet's layer 3/4 (network/transport layer in the OSI model) information.		Given two hardlinks <code>enp2s0</code> and <code>enp3s0</code> create a virtual <code>bond0</code> interface using Dynamic LACP (802.3ad), hashing outgoing packets using a packet's layer 3/4 (network/transport layer in the OSI model) information.

Axka at 01:37, 26 January 2025

2025-01-26T01:37:21Z

← Older revision		Revision as of 01:37, 26 January 2025
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	=== Bonding ===		=== Bonding ===

			<div style="margin-left: 2em; margin-bottom:1em">
			''More information: [[Networking#Link aggregation]]''</div>

	Given two hardlinks <code>enp2s0</code> and <code>enp3s0</code> create a virtual <code>bond0</code> interface using Dynamic LACP (802.3ad), hashing outgoing packets using a packet's layer 3/4 (network/transport layer in the OSI model) information.		Given two hardlinks <code>enp2s0</code> and <code>enp3s0</code> create a virtual <code>bond0</code> interface using Dynamic LACP (802.3ad), hashing outgoing packets using a packet's layer 3/4 (network/transport layer in the OSI model) information.

Mic92: imported from old wiki

2024-09-04T07:12:19Z

imported from old wiki

← Older revision		Revision as of 07:12, 4 September 2024
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	These use cases are better served by [[NetworkManager]] and its various frontends, that provides a better integrated user experience for various desktop systems.		These use cases are better served by [[NetworkManager]] and its various frontends, that provides a better integrated user experience for various desktop systems.

	{{Note\|Both systemd-networkd and NetworkManager can exist in parallel on the same machine,		{{Note\|Both systemd-networkd and NetworkManager can exist in parallel on the same machine, when they manage a distinct set of interfaces. If upstream connectivity is managed by NetworkManager (for example, NM handles wifi and networkd does VM networking), set {{Nixos:option\|systemd.network.wait-online.enable}} to false so that boot isn't blocked on connectivity that networkd will never provide.}}
	when they manage a distinct set of interfaces.}}

	=== Enabling ===		=== Enabling ===

Prince213: Fix static route example

2024-08-20T07:24:37Z

Fix static route example

← Older revision		Revision as of 07:24, 20 August 2024
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	routes = [		routes = [
	# create default routes for both IPv6 and IPv4		# create default routes for both IPv6 and IPv4
	{ ~~routeConfig.~~Gateway = "fe80::1"; }		{ Gateway = "fe80::1"; }
	{ ~~routeConfig.~~Gateway = "192.0.2.1"; }		{ Gateway = "192.0.2.1"; }
	# or when the gateway is not on the same network		# or when the gateway is not on the same network
	{		{
	~~routeConfig = {~~		Gateway = "172.31.1.1";
	Gateway = "172.31.1.1";		GatewayOnLink = true;
	GatewayOnLink = true;
	};
	}		}
	];		];

Klinger at 21:33, 24 April 2024

2024-04-24T21:33:20Z

← Older revision		Revision as of 21:33, 24 April 2024
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	{{Systemd/breadcrumb}}		{{Systemd/breadcrumb}}
	{{DISPLAYTITLE:systemd-networkd}}		{{DISPLAYTITLE:systemd-networkd}}
	[https://www.freedesktop.org/software/systemd/man/systemd-networkd.html systemd-networkd] is the network~~[[Category: Networking]]~~ configuration component of the [[systemd]][[Category:systemd]] software suite. It is well integrated into NixOS below {{Nixos:option\|systemd.network}} and should be preferred over {{Nixos:option\|networking.interfaces}} options for most use cases, since it receives far superior maintenance.		[https://www.freedesktop.org/software/systemd/man/systemd-networkd.html systemd-networkd] is the network configuration component of the [[systemd]][[Category:systemd]] software suite. It is well integrated into NixOS below {{Nixos:option\|systemd.network}} and should be preferred over {{Nixos:option\|networking.interfaces}} options for most use cases, since it receives far superior maintenance.

	Configuration for networkd is split into three sections.		Configuration for networkd is split into three sections.
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	* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]		* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]

	[[Category:systemd]]		[[Category:systemd]]
			[[Category:Networking]]

Klinger: Category:systemd

2024-04-24T21:31:57Z

Category:systemd

← Older revision		Revision as of 21:31, 24 April 2024
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	* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]		* [https://gist.github.com/mweinelt/b78f7046145dbaeab4e42bf55663ef44 NixOS 22.11 VDSL Router (VLANs on top of Bonding, IPv6 Prefix-Delegation, pppd Integration)] by [https://github.com/mweinelt mweinelt]
			[[Category:systemd]]