Removing wlan0mon created by Kismet

If your wireless card runs a netlink compatible driver (eg. based on the standard mac80211 stack), you can use the following command to delete the interface:

iw dev wlan0mon del

See iw help output for more info on creating/deleting VIFs:

dev <devname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]
phy <phyname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]
        Add a new virtual interface with the given configuration.
        Valid interface types are: managed, ibss, monitor, mesh, wds.

        The flags are only used for monitor interfaces, valid flags are:
        none:     no special flags
        fcsfail:  show frames with FCS errors
        control:  show control frames
        otherbss: show frames from other BSSes
        cook:     use cooked mode

        The mesh_id is used only for mesh mode.

dev <devname> del
        Remove this virtual interface