EfiPxeLoadFile Entry MediaStatus: Success UsingIpv6: 0 EfiPxeBcStart Entry Mode->UsingIpv6: 0Start PXE over IPv6 Private->Udp4Read->Configure Status: Success PxeBcSeedDhcp4Packet Entry PxeBcSeedDhcp4Packet Exit CreateEvent for Arp Status: Success SetTimer for ARP Status: Success CreateEvent for Icmp Status: Success PxeBcSetIp4Policy Entry Ip4Config2->GetData Status: Success PxeBcSetIp4Policy Exit PxeBcSetIp4Policy Status: Success CreateEvent for Udptimeout Status: Success Everything is success PxeBc->Start() Status: Success PxeBcLoadBootFile Entry PxeBcInstallCallback Entry InstallProtocolInterface: 245DCA21-FB7B-11D3-8F01-00A0C969723B B4962190 PxeBcInstallCallback Exit Status: Success PxeBcInstallCallback Status: Success Private->BootFileSize: 0 PxeBcDiscoverBootFile Entry EfiPxeBcDhcp Entry Mode->UsingIpv6: 0PxeBcDhcp4Dora Entry PxeBcBuildDhcp4Options Entry PxeBcBuildDhcp4Options Exit Index: 0x5 OptCount: 0x5 Dhcp4->Configure Status: Success PxeBcDhcp4CallBack Entry, Dhcp4Event: 0x1 PxeBcParseDhcp4Options Entry Found the required option. So return the option Callback Status: Warning Unknown Glyph PxeBcDhcp4CallBack Exit Status: Success PxeBcDhcp4CallBack Entry, Dhcp4Event: 0xC returns success Dhcp4->Start Status: Time out PxeBcDhcp4Dora Exit Status: Time out PxeBcDhcp4Dora Status: Time out Private->Udp6Read->Configure Status: Success EfiPxeBcDhcp Exit status:Success PxeBc->Dhcp Status: Success PxeBcSelectBootPrompt Status: Not Found Mode->ProxyOfferReceived: 0x0 Mode->UsingIpv6: 0 DXE_ASSERT!: c:\dummy\NetworkPkg\UefiPxeBcDxe\PxeBcBoot.c (508): Cache4->OptList[6] != ((void *) 0)