fix dns crash

patriciy · patriciy · commit 0c1b427bf234 · 2026-01-29T21:08:36.000+01:00
diff --git a/CloudVeilService/Platform/WindowsDns.cs b/CloudVeilService/Platform/WindowsDns.cs
@@ -30,13 +30,17 @@ public WindowsDns()
 
         public void SetDnsForNic(string nicName, IPAddress primary, IPAddress secondary)
         {
-            
             var ipVersion = "ipv4";
             
-            if(primary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
+            if(primary != null && primary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
+            {
+                ipVersion = "ipv6";
+            } 
+            else if (secondary != null && secondary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
             {
                 ipVersion = "ipv6";
             }
+              
             var command = $"interface {ipVersion} add dnsservers \"{nicName}\" address=";
             if (primary != null)
             {

Original file line number	Diff line number	Diff line change
`@@ -30,13 +30,17 @@ public WindowsDns()`
`30`	`30`
`31`	`31`	`public void SetDnsForNic(string nicName, IPAddress primary, IPAddress secondary)`
`32`	`32`	`{`
`33`		`-`
`34`	`33`	`var ipVersion = "ipv4";`
`35`	`34`
`36`		`- if(primary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)`
	`35`	`+ if(primary != null && primary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)`
	`36`	`+ {`
	`37`	`+ ipVersion = "ipv6";`
	`38`	`+ }`
	`39`	`+ else if (secondary != null && secondary.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)`
`37`	`40`	`{`
`38`	`41`	`ipVersion = "ipv6";`
`39`	`42`	`}`
	`43`	`+`
`40`	`44`	`var command = $"interface {ipVersion} add dnsservers \"{nicName}\" address=";`
`41`	`45`	`if (primary != null)`
`42`	`46`	`{`