dyndns: fix widget with IPv6; closes #797

src/www/widgets/widgets/dyn_dns_status.widget.php

@@ -53,6 +53,7 @@ if ($_REQUEST['getdyndnsstatus']) {
         }
 
         $filename = "/conf/dyndns_{$dyndns['interface']}{$dyndns['type']}" . escapeshellarg($dyndns['host']) . "{$dyndns['id']}.cache";
+        $filename_v6 = "/conf/dyndns_{$dyndns['interface']}{$dyndns['type']}" . escapeshellarg($dyndns['host']) . "{$dyndns['id']}_v6.cache";
         if (file_exists($filename) && !empty($dyndns['enable'])) {
             $ipaddr = dyndnsCheckIP($dyndns['interface']);
             $cached_ip_s = preg_split('/:/', file_get_contents($filename));
@@ -64,7 +65,17 @@ if ($_REQUEST['getdyndnsstatus']) {
             }
             echo htmlspecialchars($cached_ip);
             echo "</font>";
-        /* XXX IPv6 missing */
+        } elseif (file_exists($filename_v6) && !empty($dyndns['enable'])) {
+            $ipv6addr = get_interface_ipv6($dyndns['interface']);
+            $cached_ipv6_s = explode("|", file_get_contents($filename_v6));
+            $cached_ipv6 = $cached_ipv6_s[0];
+            if ($ipv6addr <> $cached_ipv6) {
+                echo "<font color='red'>";
+            } else {
+                echo "<font color='green'>";
+            }
+            echo htmlspecialchars($cached_ipv6);
+            echo "</font>";
         } else {
             echo '<span class="text-muted">' . gettext('N/A') . '</span>';
         }