[PATCH 2/3] UEFI IPv6 PXE support

[Michael Chang]

When system is booted from UEFI IPv6 PXE, the network interface can be
configured directly by cached DHCPv6 packet in firmware without doing it all
over again by contacting DHCP server.
---
 grub-core/net/drivers/efi/efinet.c |   24 +++++++++++++++++++-----
 1 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/grub-core/net/drivers/efi/efinet.c 
b/grub-core/net/drivers/efi/efinet.c
index f171f20..b1837e3 100644
--- a/grub-core/net/drivers/efi/efinet.c
+++ b/grub-core/net/drivers/efi/efinet.c
@@ -257,11 +257,25 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char 
**device,
     if (! pxe)
       continue;
     pxe_mode = pxe->mode;
-    grub_net_configure_by_dhcp_ack (card->name, card, 0,
-                                   (struct grub_net_bootp_packet *)
-                                   &pxe_mode->dhcp_ack,
-                                   sizeof (pxe_mode->dhcp_ack),
-                                   1, device, path);
+
+    if (pxe_mode->using_ipv6)
+      {
+       grub_net_configure_by_dhcpv6_reply (card->name, card, 0,
+                                           (struct grub_net_dhcpv6_packet *)
+                                           &pxe_mode->dhcp_ack,
+                                           sizeof (pxe_mode->dhcp_ack),
+                                           1, device, path);
+       if (grub_errno)
+         grub_print_error ();
+      }
+    else
+      {
+       grub_net_configure_by_dhcp_ack (card->name, card, 0,
+                                       (struct grub_net_bootp_packet *)
+                                       &pxe_mode->dhcp_ack,
+                                       sizeof (pxe_mode->dhcp_ack),
+                                       1, device, path);
+      }
     return;
   }
 }
-- 
1.7.3.4