'Set the channel for the interface
:param self: A NetworkManager object
:param interface_name: Name of an interface
:param channel: A channel number
:type self: NetworkManager
:type interface_name: str
:type channel: int
:return: None
:rtype: None'

def set_interface_channel(self, interface_name, channel):

    card = self._name_to_object[interface_name].card
    pyw.chset(card, channel)
