ipxe software package provides PXE boot firmware, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ipxe
ipxe is installed in your system.
Make ensure the ipxe package were installed using the commands given below,
$ sudo dpkg-query -l | grep ipxe *
You will get with ipxe package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Administration Utilities |
| Package | ipxe |
| Version | 1.0.0+git-3.55f6c88-0ubuntu1 |
| Description | PXE boot firmware |
| Sub Section | Admin |