[syslinux] Bug#592875: pxelinux: incompatible with qemu with kvm enabled

[Vagrant Cascadian]

it seems versions of pxelinux 4.00 and later hangs qemu (0.12.x, 0.13.x) when
network booting using etherboot or gPXE and qemu's kvm support is enabled.

pxelinux 3.86 and earlier do not appear to trigger the problem. i also didn't
experience the problem with qemu-kvm (formerly known as kvm). qemu without kvm
support enabled also seems to work fine.

for more details, please see:

  http://bugs.debian.org/592875
  http://bugs.debian.org/591934

thanks!

live well,
  vagrant