From f5cc970ed6d334d25b4ed3eb3034860ec7e17436 Mon Sep 17 00:00:00 2001
From: Yip Rui Fung <rf@yrf.me>
Date: Sun, 10 Dec 2023 10:07:20 +0800
Subject: [PATCH] Check the type of the RecordData instead.

---
 Apps/DnsRebindBlockingApp/App.cs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Apps/DnsRebindBlockingApp/App.cs b/Apps/DnsRebindBlockingApp/App.cs
index b40d89f4..7a3e9c09 100644
--- a/Apps/DnsRebindBlockingApp/App.cs
+++ b/Apps/DnsRebindBlockingApp/App.cs
@@ -61,13 +61,13 @@ namespace DnsRebindBlocking
             if (record.Type != DnsResourceRecordType.A && record.Type != DnsResourceRecordType.AAAA)
                 return false;
             IPAddress address;
-            switch (record.Type)
+            switch (record.RDATA)
             {
-                case DnsResourceRecordType.A:
-                    address = ((DnsARecordData)record.RDATA).Address;
+                case DnsARecordData data:
+                    address = data.Address;
                     break;
-                case DnsResourceRecordType.AAAA:
-                    address = ((DnsAAAARecordData)record.RDATA).Address;
+                case DnsAAAARecordData data:
+                    address = data.Address;
                     break;
                 default:
                     return false;