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efbCREED

Hi @Tom-Elliott – thank you for your help! The client is UEFI.

I probably should have mentioned that the main symptom I’m trying to figure out is the client giving up with PXE-E16: No valid offer received after a few minutes of trying PXE boot.

Interestingly, when I tried also listening to port 4011 with my initial config file, there was no additional traffic being picked up.

When I used the version you suggested (with the server’s IP switched in of course), the tcpdump actually no longer shows any responses to the client’s requests, and the PXE boot errors out faster with PXE-E18: Server response timeout.

tcpdump: listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
16:08:07.096920 IP (tos 0x0, ttl 64, id 29391, offset 0, flags [none], proto UDP (17), length 375)
    0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from <client’s mac address>(oui Unknown), length 347, xid 0x92c2c13c, Flags [Broadcast]
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Discover
	    MSZ (57), length 2: 1472
	    Parameter-Request (55), length 35:
	      Subnet-Mask (1), Time-Zone (2), Default-Gateway (3), Time-Server (4)
	      IEN-Name-Server (5), Domain-Name-Server (6), Hostname (12), BS (13)
	      Domain-Name (15), RP (17), EP (18), RSZ (22)
	      TTL (23), BR (28), YD (40), YS (41)
	      NTP (42), Vendor-Option (43), Requested-IP (50), Lease-Time (51)
	      Server-ID (54), RN (58), RB (59), Vendor-Class (60)
	      TFTP (66), BF (67), GUID (97), Unknown (128)
	      Unknown (129), Unknown (130), Unknown (131), Unknown (132)
	      Unknown (133), Unknown (134), Unknown (135)
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0
	    NDI (94), length 3: 1.3.16
	    ARCH (93), length 2: 7
	    Vendor-Class (60), length 32: "PXEClient:Arch:00007:UNDI:003016"
16:08:10.881261 IP (tos 0x0, ttl 64, id 29392, offset 0, flags [none], proto UDP (17), length 375)
    0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from <client’s mac address>(oui Unknown), length 347, xid 0x92c2c13c, secs 4, Flags [Broadcast]
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Discover
	    MSZ (57), length 2: 1472
	    Parameter-Request (55), length 35:
	      Subnet-Mask (1), Time-Zone (2), Default-Gateway (3), Time-Server (4)
	      IEN-Name-Server (5), Domain-Name-Server (6), Hostname (12), BS (13)
	      Domain-Name (15), RP (17), EP (18), RSZ (22)
	      TTL (23), BR (28), YD (40), YS (41)
	      NTP (42), Vendor-Option (43), Requested-IP (50), Lease-Time (51)
	      Server-ID (54), RN (58), RB (59), Vendor-Class (60)
	      TFTP (66), BF (67), GUID (97), Unknown (128)
	      Unknown (129), Unknown (130), Unknown (131), Unknown (132)
	      Unknown (133), Unknown (134), Unknown (135)
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0
	    NDI (94), length 3: 1.3.16
	    ARCH (93), length 2: 7
	    Vendor-Class (60), length 32: "PXEClient:Arch:00007:UNDI:003016"
16:08:18.968033 IP (tos 0x0, ttl 64, id 29393, offset 0, flags [none], proto UDP (17), length 375)
    0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from <client’s mac address>(oui Unknown), length 347, xid 0x92c2c13c, secs 12, Flags [Broadcast]
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Discover
	    MSZ (57), length 2: 1472
	    Parameter-Request (55), length 35:
	      Subnet-Mask (1), Time-Zone (2), Default-Gateway (3), Time-Server (4)
	      IEN-Name-Server (5), Domain-Name-Server (6), Hostname (12), BS (13)
	      Domain-Name (15), RP (17), EP (18), RSZ (22)
	      TTL (23), BR (28), YD (40), YS (41)
	      NTP (42), Vendor-Option (43), Requested-IP (50), Lease-Time (51)
	      Server-ID (54), RN (58), RB (59), Vendor-Class (60)
	      TFTP (66), BF (67), GUID (97), Unknown (128)
	      Unknown (129), Unknown (130), Unknown (131), Unknown (132)
	      Unknown (133), Unknown (134), Unknown (135)
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0
	    NDI (94), length 3: 1.3.16
	    ARCH (93), length 2: 7
	    Vendor-Class (60), length 32: "PXEClient:Arch:00007:UNDI:003016"
16:08:35.140038 IP (tos 0x0, ttl 64, id 29394, offset 0, flags [none], proto UDP (17), length 375)
    0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from <client’s mac address>(oui Unknown), length 347, xid 0x92c2c13c, secs 28, Flags [Broadcast]
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Discover
	    MSZ (57), length 2: 1472
	    Parameter-Request (55), length 35:
	      Subnet-Mask (1), Time-Zone (2), Default-Gateway (3), Time-Server (4)
	      IEN-Name-Server (5), Domain-Name-Server (6), Hostname (12), BS (13)
	      Domain-Name (15), RP (17), EP (18), RSZ (22)
	      TTL (23), BR (28), YD (40), YS (41)
	      NTP (42), Vendor-Option (43), Requested-IP (50), Lease-Time (51)
	      Server-ID (54), RN (58), RB (59), Vendor-Class (60)
	      TFTP (66), BF (67), GUID (97), Unknown (128)
	      Unknown (129), Unknown (130), Unknown (131), Unknown (132)
	      Unknown (133), Unknown (134), Unknown (135)
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0
	    NDI (94), length 3: 1.3.16
	    ARCH (93), length 2: 7
	    Vendor-Class (60), length 32: "PXEClient:Arch:00007:UNDI:003016"
^C
4 packets captured
4 packets received by filter
0 packets dropped by kernel

In case it is informative, my initial config file yields a few cycles of

cpdump: listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
16:25:14.333731 IP (tos 0x0, ttl 64, id 3165, offset 0, flags [none], proto UDP (17), length 375)
    0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from <client’s mac address>(oui Unknown), length 347, xid 0xf2335aca, Flags [Broadcast]
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Discover
	    MSZ (57), length 2: 1472
	    Parameter-Request (55), length 35:
	      Subnet-Mask (1), Time-Zone (2), Default-Gateway (3), Time-Server (4)
	      IEN-Name-Server (5), Domain-Name-Server (6), Hostname (12), BS (13)
	      Domain-Name (15), RP (17), EP (18), RSZ (22)
	      TTL (23), BR (28), YD (40), YS (41)
	      NTP (42), Vendor-Option (43), Requested-IP (50), Lease-Time (51)
	      Server-ID (54), RN (58), RB (59), Vendor-Class (60)
	      TFTP (66), BF (67), GUID (97), Unknown (128)
	      Unknown (129), Unknown (130), Unknown (131), Unknown (132)
	      Unknown (133), Unknown (134), Unknown (135)
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0
	    NDI (94), length 3: 1.3.16
	    ARCH (93), length 2: 7
	    Vendor-Class (60), length 32: "PXEClient:Arch:00007:UNDI:003016"
16:25:14.334222 IP (tos 0xc0, ttl 64, id 43055, offset 0, flags [none], proto UDP (17), length 328)
    CREEDfog.bootps > 255.255.255.255.bootpc: BOOTP/DHCP, Reply, length 300, xid 0xf2335aca, Flags [Broadcast]
	  Server-IP CREEDfog
	  Client-Ethernet-Address <client’s mac address>(oui Unknown)
	  Vendor-rfc1048 Extensions
	    Magic Cookie 0x63825363
	    DHCP-Message (53), length 1: Offer
	    Server-ID (54), length 4: CREEDfog
	    Vendor-Class (60), length 9: "PXEClient"
	    GUID (97), length 17: 0.128.226.9.231.152.246.237.17.132.7.227.255.61.233.42.0

efbCREED

I am setting up a FOG 1.5.10 server on a fresh installation of Debian 13.5. There is an existing DHCP server which I am not allowed to mess with, so I am trying to use DNSmasq to handle the PXEBoot requests.
I have sysprepped a machine for capturing an image, and when I watch what I think is the relevant traffic with

tcpdump -i eno1 -v port 67  or 68

on the server, and try to PXE boot the client, I can see the client’s request, which does ask for a boot file (parameter 67), and the server’s response, which does not include a boot file, just four handshake-y paramaters (DHCP-Message, Server-ID, Vendor-Class, and GUID).

I have included my dnsmasq config file below. (Based on the guides in the documentation, although I have tried with several iterations.)
I cannot figure out why the server will not send a boot file. Is there something obvious I’m missing? Is it possibly something to do with the existing DHCP server? The server and the client are on the same subnet, and can, e.g. ping each other successfully, independent of dnsmasq.

Thank you for any help you can provide.

dhcp-range=<my server's static ip>,proxy

# Don't function as a DNS server:
port=0

# Log lots of extra information about DHCP transactions.
log-dhcp

# Set the root directory for files available via FTP.
tftp-root=/tftpboot

# The default boot filename (BIOS / legacy), Server name, Server Ip Address
dhcp-boot=ipxe.efi,,<my server's static ip>

# Disable re-use of the DHCP servername and filename fields as extra
# option space. That's to avoid confusing some old or broken DHCP clients.
dhcp-no-override

# inspect the vendor class string and match the text to set the tag
dhcp-vendorclass=BIOS,PXEClient:Arch:00000
dhcp-vendorclass=UEFI32,PXEClient:Arch:00006
dhcp-vendorclass=UEFI,PXEClient:Arch:00007
dhcp-vendorclass=UEFI64,PXEClient:Arch:00009


# PXE menu.  The first part is the text displayed to the user. 
# The second is the timeout, in seconds.
pxe-prompt="Booting FOG Client", 3

# The known types are x86PC, PC98, IA64_EFI, Alpha, Arc_x86,
# Intel_Lean_Client, IA32_EFI, BC_EFI, Xscale_EFI and X86-64_EFI
# This option is first and will be the default if there is no input from the user.
pxe-service=X86PC, "Boot to FOG", undionly.kkpxe
pxe-service=X86-64_EFI, "Boot to FOG UEFI", ipxe.efi
pxe-service=BC_EFI, "Boot to FOG UEFI PXE-BC", snponly.efi```

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