From 66be049f142be803c80ec3676114722167d3987e Mon Sep 17 00:00:00 2001
From: Matthew Grotke <mgrotke@gmail.com>
Date: Tue, 9 Jun 2026 12:07:38 -0400
Subject: [PATCH] Development

---
 docker/routlin-dash/app/pages/dnsblocking/view.py | 12 ++++++++++--
 routlin/mod_dnsmasq.py                            | 10 +---------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/docker/routlin-dash/app/pages/dnsblocking/view.py b/docker/routlin-dash/app/pages/dnsblocking/view.py
index 21ff75d..5b2ae32 100644
--- a/docker/routlin-dash/app/pages/dnsblocking/view.py
+++ b/docker/routlin-dash/app/pages/dnsblocking/view.py
@@ -49,8 +49,12 @@ def _last_dl_time():
 
 
 def blocklist_stats_html(cfg):
-    db_rows     = config_utils._bl_db_rows()
-    last_dl     = _last_dl_time()
+    db_rows  = config_utils._bl_db_rows()
+    last_dl  = _last_dl_time()
+    bl_vlans = {}
+    for vlan in cfg.get('vlans', []):
+        for bl_name in vlan.get('use_blocklists', []):
+            bl_vlans.setdefault(bl_name, []).append(vlan['name'])
     rows = ''
     for bl in cfg.get('dns_blocking', {}).get('blocklists', []):
         name     = bl.get('name', '')
@@ -90,12 +94,15 @@ def blocklist_stats_html(cfg):
                 warn = WARN_ICON
             else:
                 warn = ''
+        vlan_names = bl_vlans.get(name, [])
+        used_by    = ', '.join(factory.e(v) for v in vlan_names) if vlan_names else '<span class="text-muted">Not used by any VLANs</span>'
         rows += (
             '<tr>'
             f'<td class="table-cell">{factory.e(name)}</td>'
             f'<td class="table-cell">{entries}</td>'
             f'<td class="table-cell">{size_str}</td>'
             f'<td class="table-cell">{factory.e(last_refreshed)}{warn}</td>'
+            f'<td class="table-cell">{used_by}</td>'
             '</tr>'
         )
     if not rows:
@@ -106,6 +113,7 @@ def blocklist_stats_html(cfg):
         '<th class="table-header">Entries</th>'
         '<th class="table-header">Size</th>'
         '<th class="table-header">Last Refreshed</th>'
+        '<th class="table-header">Used by VLAN(s)</th>'
         '</tr></thead>'
         f'<tbody>{rows}</tbody></table>'
     )
diff --git a/routlin/mod_dnsmasq.py b/routlin/mod_dnsmasq.py
index 15f28dc..c05acfc 100644
--- a/routlin/mod_dnsmasq.py
+++ b/routlin/mod_dnsmasq.py
@@ -225,18 +225,10 @@ def update_blocklist_hosts(data):
     db         = _open_db()
     bl_library = {bl["name"]: bl for bl in data.get("dns_blocking", {}).get("blocklists", [])}
 
-    needed = set()
-    for vlan in data.get("vlans", []):
-        needed.update(vlan.get("use_blocklists", []))
-
     changed  = set()
     any_fail = False
 
-    for name in needed:
-        if name not in bl_library:
-            _log.warning(f"Blocklist '{name}' referenced by a VLAN but not defined -- skipping")
-            continue
-        entry    = bl_library[name]
+    for name, entry in bl_library.items():
         is_local = entry.get("bl_type") == "local"
         save_as  = entry.get("save_as", "")