[Bug 1331547] Re: No network when PXE booting Live Ubuntu with CIFS

[patpat]

** Summary changed:

- No network when PXE booting with CIFS (Live)
+ No network when PXE booting Live Ubuntu with CIFS

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https://bugs.launchpad.net/bugs/1331547

Title:
  No network when PXE booting Live Ubuntu with CIFS

Status in “casper” package in Ubuntu:
  New

Bug description:
  the initrd.lz\initrd\scripts\casper script has a bug

  function
  do_netmount() {

  ...
      if [ "${NETBOOT}" != "nfs" ] && do_cifsmount ; then
          rc=0
      elif do_nfsmount ; then
          NETBOOT="nfs"
          export NETBOOT
          rc=0
      fi
  ...

  should be changed to
  ...
      if [ "${NETBOOT}" != "nfs" ] && do_cifsmount ; then
          export NETBOOT   ##<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
          rc=0
      elif do_nfsmount ; then
          NETBOOT="nfs"
          export NETBOOT
          rc=0
      fi
  ...

  If we use netboot=cifs the variable NETBOOT is not exported and that impacts
  initrd.lz\initrd\scripts\casper-bottom\23networking
  that ends up recreating with delay and errors /etc/network/interfaces.
  Next when Ubuntu boots Internet/Networking is not available.

  seen in 
   ubuntu-14.04-desktop-amd64.iso
   ubuntu-14.04-desktop-i386.iso

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