diff options
| -rw-r--r-- | EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_dhcp.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_dhcp.c b/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_dhcp.c index 56893bce2f..a1f4715cd0 100644 --- a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_dhcp.c +++ b/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_dhcp.c @@ -1607,14 +1607,19 @@ TryBINL ( DhcpRxBuf = &RxBuf[OfferIx];
//
- // send DHCP request
- // if fail return false
+ // use next server address first.
//
- CopyMem (
- ((EFI_IPv4_ADDRESS *) &ServerIp),
- &((DHCPV4_OP_SERVER_IP *) DhcpRxBuf->OpAdds.PktOptAdds[OP_DHCP_SERVER_IP_IX - 1])->Ip,
- sizeof (EFI_IPv4_ADDRESS)
- );
+ ServerIp.Addr[0] = DhcpRxBuf->u.Dhcpv4.siaddr;
+ if (ServerIp.Addr[0] == 0) {
+ //
+ // next server address is NULL, use option 54.
+ //
+ CopyMem (
+ ((EFI_IPv4_ADDRESS *) &ServerIp),
+ &((DHCPV4_OP_SERVER_IP *) DhcpRxBuf->OpAdds.PktOptAdds[OP_DHCP_SERVER_IP_IX - 1])->Ip,
+ sizeof (EFI_IPv4_ADDRESS)
+ );
+ }
//
// client IP address - filled in by client if it knows it
|