MAC server DHCP / Linux FOG server

  • Hi, I have a mac DHCP server. (IP

    My fog server is installed on a ubuntu 12.04 (ip

    This is my mac bootp.plist

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "">
    <plist version="1.0">
    	<string>2015-11-26 12:12:40 +0000</string>

    When trying to boot clients, I get PXE-T01: File not found
    So I capture bootp packages with Sharkwire.
    This is the Bootp sequence in the package:

    Frame 1661: 590 bytes on wire (4720 bits), 590 bytes captured (4720 bits) on interface 0
    Ethernet II, Src: Dell_c5:4c:18 (00:13:72:c5:4c:18), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
    Internet Protocol Version 4, Src:, Dst:
    User Datagram Protocol, Src Port: 68 (68), Dst Port: 67 (67)
    Bootstrap Protocol (Request)
        Message type: Boot Request (1)
        Hardware type: Ethernet (0x01)
        Hardware address length: 6
        Hops: 0
        Transaction ID: 0x73c54c18
        Seconds elapsed: 4
        Bootp flags: 0x8000, Broadcast flag (Broadcast)
        Client IP address:
        Your (client) IP address:
        Next server IP address:
        Relay agent IP address:
        Client MAC address: Dell_c5:4c:18 (00:13:72:c5:4c:18)
        Client hardware address padding: 00000000000000000000
        Server host name not given
        Boot file name not given
        Magic cookie: DHCP
        Option: (53) DHCP Message Type (Request)
        Option: (50) Requested IP Address
        Option: (55) Parameter Request List
        Option: (57) Maximum DHCP Message Size
        Option: (54) DHCP Server Identifier
        Option: (97) UUID/GUID-based Client Identifier
        Option: (93) Client System Architecture
        Option: (94) Client Network Device Interface
        Option: (60) Vendor class identifier
        Option: (255) End
        Padding: 000000000000000000000000000000000000000000000000...

    As you can see there are no options 66 / 67. While they are in my dhcp server configuration.

    What am I overlooking?


  • Developer

    @bakgat As far as I can tell the options 66 and 67 in the bootp.plist are base64 encoded. Trying to decode (e.g. I only get a sensible result for option 67 (‘undionly.kpxe’) but not for opt 66.

    The other thing I notice is that the packet you posted is a request (‘Message type: Boot Request (1)’) from a client machine. You don’t see the options in a request only on replys. See if you can find the answer from the server. DHCP goes like this: Client-Discovery, Server-Offer, Client-Request, Server-Ack (

    So you should actually see at least four DHCP packets! If you don’t see any reply DHCP packets from the server I am wondering if the bootp service is actually started?!

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