linux iw create virtual wireless network interface

create virtual interface

# iw dev interface add type [mesh_id ] [4addr on|off] [flags *]

or

# iw phy interface add type [mesh_id ] [4addr on|off] [flags *]

The field is where you define what sort of interface you're creating. It is one of:

• ibss - IBSS/ad-hoc
• mp - Mesh Point
• monitor - Monitor
• ap - Access Point (special steps required)
• station - Station/Client

Reference :
Wireless Utilities - OpenWrt Wiki

vif - Linux Wireless