From 492dc74c9a3e26e3404f2bb9fe427eed75cf4dd4 Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Mon, 26 Jan 2026 13:39:46 -0600
Subject: [PATCH] fix network map

---
 lib/towerops/snmp.ex | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/towerops/snmp.ex b/lib/towerops/snmp.ex
index 07d04276..1c82cc22 100644
--- a/lib/towerops/snmp.ex
+++ b/lib/towerops/snmp.ex
@@ -1721,7 +1721,12 @@ defmodule Towerops.Snmp do
   defp build_node_lookup(devices, nodes) do
     # Create maps for matching by different attributes
     by_id = Map.new(nodes, &{&1.id, &1})
-    by_name = Map.new(nodes, &{String.downcase(&1.label), &1.id})
+
+    by_name =
+      nodes
+      |> Enum.filter(&(&1.label != nil))
+      |> Map.new(&{String.downcase(&1.label), &1.id})
+
     by_ip = Map.new(nodes, fn node -> {node.ip_address, node.id} end)
 
     # Build MAC address lookup from SNMP devices