Creating wifi hotspot or access point on a single interface

I am trying to create a WiFi hotspot or an access point on Opensuse Kde 12.3.


I found out a software called hostapd ( http://nims11.wordpress.com/2012/04/27/hostapd-the-linux-way-to-create-virtual-wifi-access-point/ ) which lets you create hotspot but it requires two interfaces. One connected to the internet and the other on which you want to create the access point . The problem I have is that I don't have Ethernet connection. The wlan interface is being used to connect to the internet.
I even tried the yast tool for masquerading ip and routing but it too requires 2 interfaces ( one in external mode and another in lan )


Is there any way to create the hotspot on the same interface that is connected to the Internet (like the software connectify does on Windows) ?
I was thinking of creating a virtual interface (like the one airmon-ng creates to monitor wifi) and use it as the second interface. Is this possible?

Any help will be appreciated.