[syslinux] mboot.c32 loses connection when loading the Kernel

[Philipp Fehre]

Hi,
I Tried mboot.c32 Version 3.71 today and it shows the same behavior, I  
was unable to find the 3.72 in the Debian Repositories so I checked  
3.71 first.

I uploaded the pcap file here, looking through it I found the Error  
after the Read Request from from the Client.

http://dl.getdropbox.com/u/308729/mboot.pcap

Thanks for your help

Phil



On Dec 3, 2008, at 9:03 PM, Geert Stappers wrote:

> Op 20081203 om 14:27 schreef Philipp Fehre:
>> Hi,
>> I'm hope I'm right here.
>> I'm trying to boot a XEN 3.2.1 via PXEBoot using the following  
>> config:
>>
>> LABEL xen_3.2_amd64
>>         kernel mboot.c32
>>         append images/debian/xen_3.2/amd64/xen-3.2-1-amd64.gz  \
>> 		 ---  images/debian/xen_3.2/amd64/vmlinuz-2.6.26-bpo.1-xen-amd64 rw
>> root=/dev/nfs nfsroot=172.16.0.1:/var/lib/tftpboot/clientroot  
>> panic=0 \
>> 		 --- images/debian/xen_3.2/amd64/initrd.img-2.6.26-bpo.1-xen-amd64
>>
>> Its an AMD64 Machine, and the PXEBoot works using the Debian Netboot
>> Images to Test.
>>
>> Looking at the Machine Booting I get the Message that mboot.c32 is
>> loading the Kernel but then it stops.
>>
>> I ran tcpdump to check what happens and I first get Messages that the
>> Client Machine Requests the Kernel, the Server Answers and sents the
>> first couple packages,
>> but then I seems to lose the Connection and starts to sent ARP
>> Requests looking for the Client Machine which won't get answered,
>> therefor boot hangs.
>>
>> Looking at the Mailing list I found a Message that somebody had the
>> same Problem with mboot.c32 form Version 2.xx and the suggestion was
>> to try a newer Version. I'm using Syslinux 3.31 (from debian stable),
>> so I guess it should be new enough.
>>
>> Now I'm kind of stuck.
>>
>> Hoping for any Ideas,
>> 	Phil
>
>
> Capture the network packets once again,
> put the libpcap[0] file somewhere on-line
> and post the URL of it to the mailinglist.
>
> Geert Stappers
> willing to take a closer look at the captured packets
>
> [0] the format of wireshark and tcpdump
>
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