router: strip /32 suffix during resolve to deduplicate host routes

router/route-update.sh

@@ -377,7 +377,7 @@ process_routes()
                     done | grep -v '^#' | grep -v '^$' | $resolve_func | \
                         grep -v '^#' | grep -v '^$'
                 fi
-            } | sort -u > "$resolved_new"
+            } | sed 's|/32$||' | sort -u > "$resolved_new"
         fi
 
         # Check if resolved IPs actually changed