From dc7895e3b26528312aac0a366b6d7a307fe96884 Mon Sep 17 00:00:00 2001
From: DannyDannyDanny <dth@taiga.ai>
Date: Sun, 10 May 2026 16:17:28 +0200
Subject: [PATCH] monitoring: bracket IPv6 listenAddress for node_exporter

The NixOS module concatenates listenAddress and port as `${a}:${p}`,
so "::" became ":::9100" and node_exporter rejected it ("too many
colons in address"). Use "[::]" so the result is "[::]:9100".

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 modules/monitoring-node-exporter.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/monitoring-node-exporter.nix b/modules/monitoring-node-exporter.nix
index 402f44d..7e08ae0 100644
--- a/modules/monitoring-node-exporter.nix
+++ b/modules/monitoring-node-exporter.nix
@@ -4,7 +4,7 @@
   services.prometheus.exporters.node = {
     enable = true;
     port = 9100;
-    listenAddress = "::";
+    listenAddress = "[::]";
     enabledCollectors = [ "systemd" ];
   };