1. Fix a bug in PXE driver that the PXE boot do not restart if a new boot option...

[mirror_edk2.git] / NetworkPkg / Mtftp6Dxe / Mtftp6Rrq.c

diff --git a/NetworkPkg/Mtftp6Dxe/Mtftp6Rrq.c b/NetworkPkg/Mtftp6Dxe/Mtftp6Rrq.c
index 348a8f29c70fcb13e2f9c4f84292d8f721812f65..7fc613a6652b151fbe9ca9399bc3e3b3f6b8095e 100644 (file)
--- a/NetworkPkg/Mtftp6Dxe/Mtftp6Rrq.c
+++ b/NetworkPkg/Mtftp6Dxe/Mtftp6Rrq.c
@@ -547,13 +547,15 @@ Mtftp6RrqHandleOack (
         );\r
 \r
       Instance->McastPort  = ExtInfo.McastPort;\r
-      Instance->McastUdpIo = UdpIoCreateIo (\r
-                               Instance->Service->Controller,\r
-                               Instance->Service->Image,\r
-                               Mtftp6RrqConfigMcastUdpIo,\r
-                               UDP_IO_UDP6_VERSION,\r
-                               Instance\r
-                               );\r
+      if (Instance->McastUdpIo == NULL) {\r
+        Instance->McastUdpIo = UdpIoCreateIo (\r
+                                 Instance->Service->Controller,\r
+                                 Instance->Service->Image,\r
+                                 Mtftp6RrqConfigMcastUdpIo,\r
+                                 UDP_IO_UDP6_VERSION,\r
+                                 Instance\r
+                                 );\r
+      }\r
 \r
       if (Instance->McastUdpIo == NULL) {\r
         return EFI_DEVICE_ERROR;\r