def make_initiator_target_all2all_map(initiator_wwpns, target_wwpns):
    """Build a simplistic all-to-all mapping."""
    i_t_map = {}
    for i_wwpn in initiator_wwpns:
        i_t_map[str(i_wwpn)] = []
        for t_wwpn in target_wwpns:
            i_t_map[i_wwpn].append(t_wwpn)
    return i_t_map
