Solución Endian 2.5.1 OpenVPN - Configuracion IP Fijas para clientes

Articulo Original, funciono sin problemas únicamente retirar las comillas

ifconfig-push "192.168.1.80 255.255.255.0" 

y debe quedar así ifconfig-push 192.168.1.80 255.255.255.0

Fuente: http://www.efwsupport.com/index.php?action=printpage;topic=2989.0

First, open your OpenVPN config template and allow the server to search for a client configuration directory.

nano /etc/openvpn/openvpn.conf.tmpl

Remove the ; character before ";client-config-dir clients"   

Ctrl-O to write out the file and Ctrl-X to Exit Nano.

Now, create a file the exact name as the user you have configured in the OpenVPN gui in the /var/openvpn/clients directory.  There is no extension.

nano /var/openvpn/clients/EnterUserName

In this file, add the following lines adapted to your specific network configuration:

ifconfig-push "192.168.1.80 255.255.255.0"
push "redirect-gateway def1"
push "dhcp-option DNS 192.168.1.1"

Then Ctrl-O to write out the file and Ctrl-X to Exit Nano.

Restart OpenVPN server.