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NixOS Networking

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Declaratively manage your switching, routing, wireless, tunneling and more. | Don't rely on `networking.*` use systemd-networkd and NetworkManager instead. | Set `SYSTEMD_LOG_LEVEL=debug` to debug networking issues with networkd | No bad nft puns, please. | Room recommendations: #sysops:nixos.org245 Servers

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28 Jul 2025
@emilazy:matrix.orgemilyso IMO separate configs and letting people manually do explicit inheritance is the way to go17:49:27
@emilazy:matrix.orgemilyinitrd isn't the same as the booted machine17:49:37
@emilazy:matrix.orgemily (they even have different notions of machine-id by default) 17:49:42
@marcel:envs.netMarcel
In reply to @emilazy:matrix.org
I think it's easy to inherit if you want and annoying to disable automatic inheritance if you don't
Just the default, the pint you start configuring initrd stuff it is replaced and not merged
17:50:40
@marcel:envs.netMarcel If you want to merge it, you have to do it yourself as the consumer 17:51:01
@emilazy:matrix.orgemily I think that's not ideal (because if you import a module that only intends to extend the initrd network config, it unexpectedly blows away the inherited config) 17:51:15
@marcel:envs.netMarcelOk, I'll leave the default initrd config:)17:51:50
@emilazy:matrix.orgemily I think it should match boot.initrd.system.network by being separate (and in a separate hierarchy) and you can always boot.initrd.networking.ifstate = config.networking.ifstate; or such 17:51:53
@emilazy:matrix.orgemily (admittedly the boot.initrd.* hierarchy is a bit of a mess currently) 17:52:06
@marcel:envs.netMarcel
In reply to @emilazy:matrix.org
I would personally probably go for services.ifstate.* IMO, it's comparable to services.network-manager.* in that you have a systemd service managing the config, but I'm ambivalent
you are still with services.ifstate? in your last message you used networking.ifstate?
19:16:08
@emilazy:matrix.orgemily I have no consistent opinion 😅 NM is under networking.* right? 19:16:59
@emilazy:matrix.orgemilyI'd match NM19:17:01
@marcel:envs.netMarcelyeah19:17:21
@marcel:envs.netMarcelallrigh19:17:23
@marcel:envs.netMarcelshoult the initrd options then be unser boot.initrd.network.ifstate?19:17:43
@sandro:supersandro.deSandro 🐧that's what we are doing in the hackspace. Marcel knows that part, too.19:19:42
@emilazy:matrix.orgemily I'm not totally sure as it is possible (but not guaranteed) that we will deprecate that hierarchy. I'd say boot.initrd.network.ifstate or boot.initrd.ifstate are both fine 19:19:46
@emilazy:matrix.orgemily ideally boot.initrd would mirror the top level hierarchy 19:20:04
@emilazy:matrix.orgemilybut alas :)19:20:07
@marcel:envs.netMarcel so boot.initrd.networking? ;D 19:20:22
@emilazy:matrix.orgemilyyeah, but it's probably too confusing to do that19:20:37
@marcel:envs.netMarcelyeah unserstand that19:20:42
@marcel:envs.netMarceli'll use networking19:20:49
@marcel:envs.netMarcel * 19:20:54
@marcel:envs.netMarcel

I've build an assertion like this:

IfState and networking.useDHCP cannot be used at the same time, as both configure the network. Please look into IfState hooks to integrate DHCP: https://codeberg.org/liske/ifstate/issues/111

The problem is that useDHCP is per default set to true. That means that every user first using ifstate gets this error, is this bad? Should ifstate set useDHCP to false?

20:25:45
@hexa:lossy.networkhexa (clat on linux when)please bring ifstate upstream20:27:00

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