code: def get_in_ip_addr(cls, tenant_id):
          
          if tenant_id not in cls.serv_obj_dict:
              LOG.error("Fabric not prepared for tenant %s", tenant_id)
              return
          tenant_obj = cls.serv_obj_dict.get(tenant_id)
          return tenant_obj.get_in_ip_addr()
docs: Retrieves the 'in' service subnet attributes.