(legacy) display carp frequency in vip overview

src/www/firewall_virtual_ip.php

@@ -291,7 +291,7 @@ $main_buttons = array(
                         <td>
                           <?=($vipent['type'] == "single" || $vipent['type'] == "network") && !empty($vipent['subnet_bits']) ? $vipent['subnet']."/".$vipent['subnet_bits'] : "";?>
                           <?=$vipent['type'] == "range" ? $vipent['range']['from'] . "-" .  $vipent['range']['to'] : "";?>
-                          <?=$vipent['mode'] == "carp" ?  " (vhid {$vipent['vhid']})" : "";?>
+                          <?=$vipent['mode'] == "carp" ?  " (vhid {$vipent['vhid']} , freq. {$vipent['advbase']} / {$vipent['advskew']} )" : "";?>
                         </td>
                         <td>
                           <?=htmlspecialchars($interfaces[$vipent['interface']]);?>