[syslinux] core_udp_sendto: no mapping

[Joakim Tjernlund]

On Wed, 2017-12-13 at 20:11 +0100, Joakim Tjernlund wrote:
> On Wed, 2017-12-13 at 17:15 +0000, Ady Ady via Syslinux wrote:
> > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
> > 
> > 
> > > 
> > > efistub.jpg:
> > > 
> > > > > Start PXE over IPv4.
> > > 
> > >   Station IP address is 192.168.201.185
> > > 
> > >   Server IP address is 10.210.32.100
> > >   NBP filename is pxelinux.0
> > >   NBP filesize is 6644000 Bytes
> > >  Downloading NBP file...
> > > 
> > >   Succeed to download NBP file.
> > > 
> > >  Downloading NBP file...
> > > 
> > >   Succeed to download NBP file.
> > > 
> > 
> > 
> > I will not pretend that I understand all these technical details, but I
> > do know one thing: pxelinux.0 is not for UEFI (unless in CSM mode).
> > 
> > So, here's a (somewhat rhetorical) question: why are "efistub" and
> > "pxelinux.0" together in this conversation?
> 
> This is because on that network I do not control DHCP servers(Windows) and I cannot
> change the file name etc.
> So for test I replace pxelinux.0 with syslinux.efi and also put a copy of ldlinux.e64
> there.
> 
> Some good news, on another network we have linux dhcp servers under control so there
> we could change the filename to efi/syslinux.efi and lo and behold, now it works!
> 
> I figured EFI would not know the difference of these two methods ?
> Note, only tested on this new server. I will test my laptop tmw.

No change for my laptop so I guess I need the fix Gene is working on ..