From e36ea87d64c421be9debccbddb83aefc0ec9cfda Mon Sep 17 00:00:00 2001
From: xljiulang <366193849@qq.com>
Date: Tue, 20 Jul 2021 20:57:43 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E5=B9=B3=E5=8F=B0=E5=88=A4?=
 =?UTF-8?q?=E6=96=AD?=
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---
 FastGithub.Dns/DnsServerHostedService.cs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/FastGithub.Dns/DnsServerHostedService.cs b/FastGithub.Dns/DnsServerHostedService.cs
index 1730601..6d9b40b 100644
--- a/FastGithub.Dns/DnsServerHostedService.cs
+++ b/FastGithub.Dns/DnsServerHostedService.cs
@@ -41,13 +41,15 @@ namespace FastGithub.Dns
             this.hostsValidator = hostsValidator;
             this.logger = logger;
 
-            if (OperatingSystem.IsWindows())
+            options.OnChange(opt =>
             {
-                options.OnChange(opt => SystemDnsUtil.DnsFlushResolverCache());
-            }
+                if (OperatingSystem.IsWindows())
+                {
+                    SystemDnsUtil.DnsFlushResolverCache();
+                }
+            });
         }
 
-
         /// <summary>
         /// 启动dns
         /// </summary>