Add the unspecified address check for DNS6 StationIp,
so the underlying driver will choose the source address.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiaxin Wu <jiaxin...@intel.com>
---
 NetworkPkg/DnsDxe/DnsProtocol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NetworkPkg/DnsDxe/DnsProtocol.c b/NetworkPkg/DnsDxe/DnsProtocol.c
index eafa929..70857c2 100644
--- a/NetworkPkg/DnsDxe/DnsProtocol.c
+++ b/NetworkPkg/DnsDxe/DnsProtocol.c
@@ -872,11 +872,11 @@ Dns6Configure (
     Instance->State = DNS_STATE_UNCONFIGED;
   } else {
     //
     // Configure the parameters for new operation.
     //
-    if (!NetIp6IsValidUnicast (&DnsConfigData->StationIp)) {
+    if (!NetIp6IsUnspecifiedAddr (&DnsConfigData->StationIp) && 
!NetIp6IsValidUnicast (&DnsConfigData->StationIp)) {
       Status = EFI_INVALID_PARAMETER;
       goto ON_EXIT;
     }
 
     Status = Dns6CopyConfigure (&Instance->Dns6CfgData, DnsConfigData);
-- 
1.9.5.msysgit.1


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