[syslinux] memdisk and iso

[Gene Cumm]

On Sat, Jun 8, 2013 at 1:17 PM, H. Peter Anvin <hpa at zytor.com> wrote:
> I have to say I wonder how much of this is iPXE and much is syslinux...
>
> Gene Cumm <gene.cumm at gmail.com> wrote:
>
>>On Thu, Jun 6, 2013 at 5:01 PM, H. Peter Anvin <hpa at zytor.com> wrote:
>>> Very odd!
>>>
>>> This shows a TFTP connection being correctly established and then
>>> disconnected, with all the negotiation involved.  I'm wondering if it
>>is
>>> iPXE that is playing games with us here...
>>
>>Packets 301-306, 309-312 show two successful attempts to read
>>linux-install/pxelinux.cfg/C0A80058 with the same UDP source port
>>(49153).
>>
>>Packets 307,308,313-316 show two unsuccessful attempts to read
>>linux-install/pxelinux.cfg/vesamenu.c32 reusing the same UDP source
>>port (49153) with an ICMP reply stating the port is closed.
>>
>>Packets 317-357 show a successful single attempt to read
>>linux-install/pxelinux.cfg/vesamenu.c32 reusing the same UDP source
>>port (49153).
>>
>>Packets 358,360-412,415-625 show a success on libcom32.c32 while
>>359,413,414 show an unsuccessful attempt.
>>
>>Something is certainly tripping up as I don't see these duplicate
>>attempts in my testing and in my mind iPXE is in the lead.
>>
>>--
>>-Gene

Correction: an iPXE _interaction_ as it could be that we need to
instruct iPXE's PXE to be quiet while lwIP is using the UNDI and/or
unload.  Silencing iPXE's PXE would be preferable in case we chainload
to another NBP (in which case we'd unquiet it).

--
-Gene