def get_phy_intfs(host_ans):
    """
    @Summary: Get the physical interfaces (e.g., EthernetX) of a DUT
    @param host_ans: Ansible host instance of this DUT
    @return: Return the list of active interfaces
    """
    intf_facts = host_ans.interface_facts()['ansible_facts']['ansible_interface_facts'] 
    phy_intfs = [k for k in intf_facts.keys() if k.startswith('Ethernet')]
    return phy_intfs