From d5711e7de778b8f2f5e183a3fd32630631c7b806 Mon Sep 17 00:00:00 2001
From: Colin <colin@uninsane.org>
Date: Mon, 7 Jul 2025 19:49:51 +0000
Subject: [PATCH] netns: set lo up when initializing the netns

this is critical for services which communicate with eachother, e.g. jackett -> bitmagnet
---
 modules/netns.nix | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/modules/netns.nix b/modules/netns.nix
index 4e12d0279..8350f8c73 100644
--- a/modules/netns.nix
+++ b/modules/netns.nix
@@ -87,6 +87,18 @@ let
         "${ip} netns delete ${name}"
       ];
     };
+    systemd.services."netns-${name}-lo" = {
+      description = "bring loopback device online in '${name}' network namespace";
+      wantedBy = [ "netns-${name}.target" ];
+      before = [ "netns-${name}.target" ];
+      after = [ "netns-${name}.service" ];
+      partOf = [ "netns-${name}.service" ];
+      serviceConfig.Type = "oneshot";
+      serviceConfig.RemainAfterExit = true;
+      serviceConfig.NetworkNamespacePath = "/run/netns/${name}";
+      serviceConfig.ExecStart = "${ip} link set lo up";
+      serviceConfig.ExecStop = "${ip} link set lo down";
+    };
     systemd.services."netns-${name}-veth" = {
       description = "create a link between ${name} and the parent net namespace which tunnels any traffic explicitly routed to it";
       wantedBy = [ "netns-${name}.target" ];