isc-dhcp-client software package provides ISC DHCP client, 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 isc-dhcp-client
isc-dhcp-client is installed in your system.
Make ensure the isc-dhcp-client package were installed using the commands given below,
$ sudo dpkg-query -l | grep isc-dhcp-client *
You will get with isc-dhcp-client package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Network |
| Package | isc-dhcp-client |
| Version | 4.1.ESV-R4-0ubuntu5.10 [amd64, |
| Description | ISC DHCP client |
| Sub Section | Net |