diff --git a/NetworkPkg/Ip6Dxe/Ip6ConfigImpl.c b/NetworkPkg/Ip6Dxe/Ip6ConfigImpl.c
index 9287475e08..bde5982b69 100644
--- a/NetworkPkg/Ip6Dxe/Ip6ConfigImpl.c
+++ b/NetworkPkg/Ip6Dxe/Ip6ConfigImpl.c
@@ -1327,7 +1327,6 @@ Ip6ConfigSetDnsServer (
 {
   UINTN                 OldIndex;
   UINTN                 NewIndex;
-  UINTN                 Index1;
   EFI_IPv6_ADDRESS      *OldDns;
   EFI_IPv6_ADDRESS      *NewDns;
   UINTN                 OldDnsCount;
@@ -1372,15 +1371,6 @@ Ip6ConfigSetDnsServer (
       return EFI_INVALID_PARAMETER;
     }
 
-    for (Index1 = NewIndex + 1; Index1 < NewDnsCount; Index1++) {
-      if (EFI_IP6_EQUAL (NewDns + NewIndex, NewDns + Index1)) {
-        if (Tmp != NULL) {
-          FreePool (Tmp);
-        }
-        return EFI_INVALID_PARAMETER;
-      }
-    }
-
     if (OneAdded) {
       //
       // If any address in the new setting is not in the old settings, skip the