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NixOS Networking

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Declaratively manage your switching, routing, wireless, tunneling and more. | Don't rely on `networking.*` for interface and routing setup, use systemd-networkd, ifstate or NetworkManager instead. | Set `SYSTEMD_LOG_LEVEL=debug` to debug networking issues with networkd | No bad nft puns, please. | Room recommendations: #sysops:nixos.org260 Servers

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SenderMessageTime
23 Jun 2026
@matthewcroughan:defenestrate.itmatthewcroughan100% it's qemu yes 19:27:31
@nico:c3d2.deNicoOk19:27:43
@nico:c3d2.deNicoSo, since you moved the address, does your ping now work again?19:28:01
@matthewcroughan:defenestrate.itmatthewcroughanIt doesn't no19:28:06
@matthewcroughan:defenestrate.itmatthewcroughanit's all broken after the br0 exists and has members19:28:14
@casey:hubns.netcasey ©is ygg finding neighbors via v4 or v6? did you update your default route after moving the ip?19:29:00
@matthewcroughan:defenestrate.itmatthewcroughanygg is v6 only19:29:13
@nico:c3d2.deNicoOn the inside, but what about the outside?19:29:27
@matthewcroughan:defenestrate.itmatthewcroughanI'm not aware of it doing anything v4 related19:29:46
@nico:c3d2.deNicoThere are at least public peers with v419:29:48
@nico:c3d2.deNicohttps://publicpeers.neilalexander.dev/19:29:51
@matthewcroughan:defenestrate.itmatthewcroughanah yeah, guess so 19:29:57
@nico:c3d2.deNicoOk so can you confirm you have internet access19:30:18
@matthewcroughan:defenestrate.itmatthewcroughan yeah, all I have is two nixos vms, that you can make yourself by calling nixosSystem with services.yggdrasil.enable 19:30:42
@matthewcroughan:defenestrate.itmatthewcroughan I run the .vm attribute 19:30:49
@matthewcroughan:defenestrate.itmatthewcroughan I then run theip commands from the ifstate webpage 19:31:04
@matthewcroughan:defenestrate.itmatthewcroughan * I then run the ipcommands from the ifstate webpage 19:31:13
@nico:c3d2.deNicoThey vm's are in the same network right?19:31:18
@matthewcroughan:defenestrate.itmatthewcroughanbefore br0 it pings fine, afterwards not19:31:22
@matthewcroughan:defenestrate.itmatthewcroughan they're two separate VMs, but I can't rule out something being funky19:31:32
@matthewcroughan:defenestrate.itmatthewcroughanyes they're in the same network technically since they're running on the same laptop19:31:41
@nico:c3d2.deNicoAnd the will be for the application you want to use the gretap for right?19:31:58
@nico:c3d2.deNico* And the will be for the application you want to use the gretap for, right?19:32:16
@matthewcroughan:defenestrate.itmatthewcroughanI don't understand what you're asking?19:32:28
@nico:c3d2.deNicoWhat is the yggdrasil shit for?19:32:50
@nico:c3d2.deNicoIt makes your life way more complicated right now19:33:00
@matthewcroughan:defenestrate.itmatthewcroughantwo machines to talk to eachother regardless of where they are19:33:01
@nico:c3d2.deNicoWhich you don't need, if I understand correctly because these machines are in the same network19:33:23
@matthewcroughan:defenestrate.itmatthewcroughanWell that's pointless, of course that works19:33:38
@matthewcroughan:defenestrate.itmatthewcroughanthe challenge is to get GRE working over yggdrasil19:33:44

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