nix/cluster-configuration: mention CNI plugin issue
diff --git a/nix/cluster-configuration.nix b/nix/cluster-configuration.nix
index c48761a..a3601bd 100644
--- a/nix/cluster-configuration.nix
+++ b/nix/cluster-configuration.nix
@@ -238,7 +238,7 @@
   # This by default removes all CNI plugins and replaces them with nix-defines ones
   # Since we bring our own CNI plugins via containers with host mounts, this causes
   # them to be removed on kubelet restart.
-  # TODO(q3k): file issue
+  # TODO(https://github.com/NixOS/nixpkgs/issues/53601): fix when resolved
   systemd.services.kubelet = {
     preStart = pkgs.lib.mkForce "sleep 1";
   };