Chris Adams writes:
Once upon a time, isdtor isdtor@gmail.com said:
11:06:51.413549 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 390) 10.1.2.2.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP, Reply, length 362, xid 0x4007adc6, Flags [Broadcast] (0x8000) Your-IP 10.1.2.57 Server-IP 10.1.2.1 <-- Client-Ethernet-Address 00:1b:21:d8:69:1c file "linux-install/bootx64.efi" Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: ACK Server-ID Option 54, length 4: 10.1.2.2 Lease-Time Option 51, length 4: 43200 Subnet-Mask Option 1, length 4: 255.255.255.0 Default-Gateway Option 3, length 4: 10.1.2.250 Domain-Name-Server Option 6, length 8: 10.1.2.2 Hostname Option 12, length 5: "client" Domain-Name Option 15, length 20: "foo.bar.com" NTP Option 42, length 8: 10.1.2.2 RN Option 58, length 4: 21600 RB Option 59, length 4: 37800 TFTP Option 66, length 11: "10.1.2.1" <-- END Option 255, length 0
I do see a couple of differences - main one is that my boot file is in option 67, not the BOOTP "file" field. Also, my option 66 is a hostname, not an IP. I don't know how you tell ISC DHCP to use option 67 instead of the file field, but maybe that could trigger different client behavior?
More odd is that dnsmasq is adding a null terminator to both options 66 and 67. My UEFI PXE clients seem to accept it just fine though.
Yes, it looks like I'm out of luck and need to find a newer machine to test this with. Moving the tftp server works to an extent - server boots right into a grub prompt.
I went over the linux-poweredge archives and found this:
https://lists.us.dell.com/pipermail/linux-poweredge/2015-May/049810.html
In particular: | 2. Don't waste time w/ a R*10, the UEFI PXE boot code is buggy! It misinterprets the NBP filename (DHCP option 67). That's an old Intel bug; they fixed it years ago in their BIOS PXE implementation. I'm guessing it was resurrected in their UEFI PXE implementation. | | Most all NIC vendors (Intel, Broadcom, etc) use the Intel reference implementation for PXE.