[syslinux] Hyper-V Gen 2 waiting for ldlinux.e64

[Geert Stappers]

On Wed, Oct 07, 2015 at 01:58:51PM +0200, James Clements via Syslinux wrote:
> On Wed, Oct 07, 2015 at 07:21:28AM -0400, Gene Cumm via Syslinux wrote:
> > On Wed, Oct 7, 2015 at 6:40 AM, Clements, James via Syslinux wrote:
> > > Hi,
> > >
> > > I am using a Windows Server 2012 R2 Hyper-V Generation 2 VM as a
> > > PXE client (no physical machines available). This is a UEFI VM, and
> > > as per instructions I've read I have disabled secure boot on this
> > > VM for the installation of Linux.
> > >
> > >
> > > The problem I am experiencing is that when I attempt to PXE boot
> > > my Hyper-V VM client, I can see it requesting the syslinux.efi
> > > file from the tftp server. The initial request has options for
> > > both tsize and blksize included, and the response packets from the
> > > tftp server include both options as well.
> > >
> > > I have a packet capture here (please excuse the 'noise') which
> > > demonstrates the problem I am seeing here:
> > >
> > > https://dl.dropboxusercontent.com/u/102712992/capture.pcap
> >
> > http://www.syslinux.org/archives/2015-October/024375.html
> >
> > git://github.com/geneC/syslinux.git
> > https://github.com/geneC/syslinux.git
> >
> > Branch 1efipxe
> >
> >
> > https://sites.google.com/site/genecsyslinux/sl604p0g18-x64.tgz?attredirects=0&d=1
> > https://sites.google.com/site/genecsyslinux/sl604p0g18-bios.tgz?attredirects=0&d=1
> >
> > Please try these binaries.  Thanks in advance.
> >
>
>
> Hi Gene,
>
> Thanks for the quick reply. I have just tested the binaries from
> sl604p0g18-x64.tgz and still have the same   issue. Here is another
> capture using the new binaries, although to be honest the ldlinux.e64
> behaviour looks much like the first:
>
> https://dl.dropboxusercontent.com/u/102712992/capture2.pcap
>

Did wget that PCAP-file, found this

13:36:47.954215 IP 192.168.205.50.1938 > 192.168.205.1.tftp:  40 RRQ "efi64/syslinux.efi" octet blksize 1482 
13:36:47.954774 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 15
13:36:47.955380 IP 192.168.205.50.1938 > 192.168.205.1.47973: UDP, length 4
13:36:47.955417 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 1486
13:36:47.955421 IP 192.168.205.1 > 192.168.205.50: udp
13:36:47.955482 IP 192.168.205.50.1938 > 192.168.205.1.47973: UDP, length 4
13:36:47.955499 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 1486
13:36:47.955502 IP 192.168.205.1 > 192.168.205.50: udp
13:36:47.955553 IP 192.168.205.50.1938 > 192.168.205.1.47973: UDP, length 4
13:36:47.955568 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 1486
13:36:47.955571 IP 192.168.205.1 > 192.168.205.50: udp
which is the start of the TFTP transfer of efi64/syslinux.efi

Then at the end

$ /usr/sbin/tcpdump -r capture2.pcap ether host 00:15:5d:7c:99:03 | tail    
reading from file capture2.pcap, link-type EN10MB (Ethernet)
13:36:47.964568 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 1486
13:36:47.964571 IP 192.168.205.1 > 192.168.205.50: udp
13:36:47.964623 IP 192.168.205.50.1938 > 192.168.205.1.47973: UDP, length 4
13:36:47.964636 IP 192.168.205.1.47973 > 192.168.205.50.1938: UDP, length 30
13:36:47.964685 IP 192.168.205.50.1938 > 192.168.205.1.47973: UDP, length 4
13:36:47.974245 IP 192.168.205.50.1939 > 192.168.205.1.tftp:  47 RRQ "efi64/ldlinux.e64" octet tsize 0 blksize 1408 
13:36:47.974552 IP 192.168.205.1.56054 > 192.168.205.50.1939: UDP, length 28
13:36:48.975612 IP 192.168.205.1.56054 > 192.168.205.50.1939: UDP, length 28
13:36:50.971212 IP 192.168.205.1.57375 > 192.168.205.50.1937: UDP, length 28
13:36:50.977653 IP 192.168.205.1.56054 > 192.168.205.50.1939: UDP, length 28

I do read in that 192.168.205.50 going deaf.



Groeten
Geert Stappers
-- 
Leven en laten leven