Using bridges under NixOS - Revision history

SigmaSquadron: Refactor page and propose deletion.

2024-10-27T22:21:47Z

Refactor page and propose deletion.

← Older revision		Revision as of 22:21, 27 October 2024
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	~~==Using bridges under~~ NixOS ==		{{Delete\|The related bug has been fixed and the contents of this page no longer apply to a modern NixOS, which uses systemd-networkd.}}

			In order to use macvtap bridges in KVM, LXC, Xen or another hypervisor on NixOS, you have to configure your DHCP server to not assign an IP address to that interface.

	~~If you want to use macvtap bridges in KVM~~, ~~LXC, Xen or $hypervisor on NixOS you have to tell your~~		By default, the DHCP server on NixOS configures every interface with an IP.
	~~dhcp server to not configure that interface with an ip.~~
	~~Yes exactly~~ the ~~dhcp~~ server on NixOS configures every interface ~~as long it has been told to not to~~.

	~~If you are running dhcpcd then you have to define~~		== Configuration ==
	~~networking.dhcpcd.denyInterfaces~~ = ~~[ "macvtap0@*" ]~~
	~~for example.~~

	~~What is the error~~ you ~~get when layer 2 bridges~~ have ~~IPs?~~		If you are running <code>dhcpcd</code>, then you have to define a <code>denyInterfaces</code> parameter:
	~~[https://serverfault~~.~~com/questions/959667/kvm-bridge-~~networking~~-first-arp-packet-gets-answered-by-wrong-host stackoverflow issue~~]		{{file\|configuration.nix\|nix\|
			<nowiki>
			{
			networking.dhcpcd.denyInterfaces = [ "macvtap0@*" ];
			}
			</nowiki>
			}}
			{{Evaluate}}

	~~Open bug: https://github~~.~~com/NixOS/nixpkgs/issues/67966~~
			Issue {{issue\|67966}} is relevant for DHCP and bridging.

	[[Category:Virtualization]]		[[Category:Virtualization]]

Klinger: Category:Virtualization

2024-04-19T17:32:51Z

Category:Virtualization

← Older revision		Revision as of 17:32, 19 April 2024
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	Open bug: https://github.com/NixOS/nixpkgs/issues/67966		Open bug: https://github.com/NixOS/nixpkgs/issues/67966

			[[Category:Virtualization]]

imported>Luis-Hebendanz at 20:55, 2 September 2019

2019-09-02T20:55:23Z

← Older revision		Revision as of 20:55, 2 September 2019
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	What is the error you get when layer 2 bridges have IPs?		What is the error you get when layer 2 bridges have IPs?
	[https://serverfault.com/questions/959667/kvm-bridge-networking-first-arp-packet-gets-answered-by-wrong-host stackoverflow issue]		[https://serverfault.com/questions/959667/kvm-bridge-networking-first-arp-packet-gets-answered-by-wrong-host stackoverflow issue]

			Open bug: https://github.com/NixOS/nixpkgs/issues/67966

imported>Samueldr: Puts contents back as expected

2019-09-02T20:49:26Z

Puts contents back as expected

← Older revision		Revision as of 20:49, 2 September 2019
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	~~#REDIRECT~~ [[~~Template~~:~~Issue]~~]		==Using bridges under NixOS ==


			If you want to use macvtap bridges in KVM, LXC, Xen or $hypervisor on NixOS you have to tell your
			dhcp server to not configure that interface with an ip.
			Yes exactly the dhcp server on NixOS configures every interface as long it has been told to not to.

			If you are running dhcpcd then you have to define
			networking.dhcpcd.denyInterfaces = [ "macvtap0@*" ]
			for example.

			What is the error you get when layer 2 bridges have IPs?
			[https://serverfault.com/questions/959667/kvm-bridge-networking-first-arp-packet-gets-answered-by-wrong-host stackoverflow issue]

imported>Samueldr: Samueldr moved page Using bridges under NixOS to Template:Issue: Puts the page back to the proper location to keep history proper

2019-09-02T20:48:47Z

Samueldr moved page Using bridges under NixOS to Template:Issue: Puts the page back to the proper location to keep history proper

New page

#REDIRECT [[Template:Issue]]