route-update.sh: auto-detect and reload lost rules/routes

router/route-update.sh

@@ -203,8 +203,19 @@ process_routes()
             local saved_hash
             read -r saved_hash < "$STATE_DIR/$state/hash"
             if [ "$current_hash" = "$saved_hash" ] ; then
-                [ -n "$SHOW" ] && log "[$name]$label No changes (hash match), skipping"
-                continue
+                # Check if rules/routes were lost (e.g. after network restart)
+                local need_reload=
+                if ! $ipcmd rule show | grep -q "lookup $table" ; then
+                    need_reload=1
+                elif [ "$($ipcmd route show table "$table" 2>/dev/null | wc -l)" = "0" ] ; then
+                    need_reload=1
+                fi
+                if [ -n "$need_reload" ] ; then
+                    log "[$name]$label Rules/routes lost, forcing reload"
+                else
+                    [ -n "$SHOW" ] && log "[$name]$label No changes (hash match), skipping"
+                    continue
+                fi
             fi
         fi
 
@@ -238,7 +249,7 @@ process_routes()
         } | sort -u > "$resolved_new"
 
         # Check if resolved IPs actually changed
-        if [ -z "$FORCE" ] && [ -f "$STATE_DIR/$state/resolved" ] ; then
+        if [ -z "$FORCE" ] && [ -z "$need_reload" ] && [ -f "$STATE_DIR/$state/resolved" ] ; then
             if diff -q "$STATE_DIR/$state/resolved" "$resolved_new" >/dev/null 2>&1 ; then
                 # IPs same, but gateway may have changed
                 if [ -f "$STATE_DIR/$state/gateway" ] && diff -q "$STATE_DIR/$state/gateway" "$gwdir/gateway" >/dev/null 2>&1 ; then