Hi Igor,
Thanks for the reply.
I have gone through the video which was provided by you, But the video describes how to connect to wifi from the GUI.
But I am facing the issue from command line. for example if we take "eth0" as my network interface, if I execute the commands ifconfig eth0 down/up result will down and up the interface according to the command given, Similarly in my case I am creating one virtual interface "wifi0" like "eth0", Now if I execute the command ifconfig wifi0 down/up it is giving the error "interface wifi0 not configured".
Please help me to resolve this.
Thanks and Regards,
Mutyalarao.