Re: netboot 0.9.3 intel pro/100 (# 80) fails..

[Michael Stein <mas@ucla.edu>]

More information (with stc instruction instead of callpkt after setmd5):

It's definitely getting farther, the network trace shows some packets:

 No. Time        Source                Destination           Protocol Info
      1 0.000000    u06.bwc.ats.ucla.edu  ff:ff:ff:ff:ff:ff     ARP      Who has 128.97.60.207?  Tell 128.97.60.205
      2 0.000030    s02.bwc.ats.ucla.edu  u06.bwc.ats.ucla.edu  ARP      128.97.60.207 is at 00:90:27:10:06:59
      3 0.000909    u06.bwc.ats.ucla.edu  s02.bwc.ats.ucla.edu  TFTP     Read Request, File: pxelinux.0, Transfer type: octet
      4 0.016652    s02.bwc.ats.ucla.edu  u06.bwc.ats.ucla.edu  TFTP     Option Acknowledgement
      5 0.016798    u06.bwc.ats.ucla.edu  s02.bwc.ats.ucla.edu  TFTP     Acknowledgement, Block: 0
      6 0.017126    s02.bwc.ats.ucla.edu  u06.bwc.ats.ucla.edu  TFTP     Data Packet, Block: 1
      7 0.019360    u06.bwc.ats.ucla.edu  s02.bwc.ats.ucla.edu  TFTP     Acknowledgement, Block: 1
      8 0.019505    s02.bwc.ats.ucla.edu  u06.bwc.ats.ucla.edu  TFTP     Data Packet, Block: 2
      9 0.019944    u06.bwc.ats.ucla.edu  s02.bwc.ats.ucla.edu  TFTP     Acknowledgement, Block: 2
     10 0.019980    u06.bwc.ats.ucla.edu  s02.bwc.ats.ucla.edu  TFTP     Error Code, Code: Disk full or allocation exceeded, Message: 
     11 0.020057    s02.bwc.ats.ucla.edu  u06.bwc.ats.ucla.edu  TFTP     Data Packet, Block: 3

That "Disk full or allocation exceeded" error sent by the netboot
machine is strange.  It's right after netboot has ACK'ed TFTP block 2.
(Or is this normal that netboot ACK's the block and then finds out it
doesn't have any place to put it?).

Here's the detail on the error packet:

Frame 10 (60 on wire, 60 captured)
    Arrival Time: Jun  7, 2002 12:09:59.324981000
    Time delta from previous packet: 0.000036000 seconds
    Time relative to first packet: 0.019980000 seconds
    Frame Number: 10
    Packet Length: 60 bytes
    Capture Length: 60 bytes
Ethernet II
    Destination: 00:90:27:10:06:59 (s02.bwc.ats.ucla.edu)
    Source: 00:90:27:a9:2e:19 (u06.bwc.ats.ucla.edu)
    Type: IP (0x0800)
    Trailer: 00000000000000000000000000
Internet Protocol, Src Addr: u06.bwc.ats.ucla.edu (128.97.60.205), Dst Addr: s02.bwc.ats.ucla.edu (128.97.60.207)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 33
    Identification: 0x0006
    Flags: 0x00
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 255
    Protocol: UDP (0x11)
    Header checksum: 0x4167 (correct)
    Source: u06.bwc.ats.ucla.edu (128.97.60.205)
    Destination: s02.bwc.ats.ucla.edu (128.97.60.207)
User Datagram Protocol, Src Port: 1071 (1071), Dst Port: 1030 (1030)
    Source port: 1071 (1071)
    Destination port: 1030 (1030)
    Length: 13
    Checksum: 0x7d38 (correct)
Trivial File Transfer Protocol
    Opcode: Error Code (5)
    Error code: Disk full or allocation exceeded (3)
    Error message: 

How is netboot usually debugged?  Is there some way of running it under
a debugger? (Or under some system?)  Any suggestions?
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