Ubuntu Hosts not able to ping NetBIOS hostname with Samba WINS Server configured

Symptom:
- Samba WINS Server is configured on server host
- Ubuntu client host (with Ubuntu 14.04.1 Server installed) cannot ping a target via NetBIOS name added in the WINS Server host table
- Windows client host (Windows 7 / Windows 8.x) can successfully ping a target host via NetBIOS name added in the WINS Server host tabel even when the target host is down
- In the Ubuntu client host, nmblookup cannot return the IP Address of a host up and running via NetBIOS name

Cause:
A package was missed during the installation of Winbind (seems the package will not be installed in most Ubuntu Server installation)

Solution:
Run the following command in the Ubuntu client host, rebooting is not required.

sudo apt-get install libnss-winbind