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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def default_interface(ifconfig=None, route_output=None):
 """ Return just the default interface device dictionary. :param ifconfig: For mocking actual command output :param route_output: For mocking actual command output """

    global Parser
    return Parser(ifconfig=ifconfig)._default_interface(route_output=route_output)