attribute_set_basic
*attr = attribute_set_basic(*attr, attr_class, value);
extern u_int8_t *attribute_set_basic(u_int8_t *, u_int16_t, u_int16_t);
attr = attribute_set_basic(
attr = attribute_set_basic(attr, IKE_ATTR_KEY_LENGTH,
attr = attribute_set_basic(attr, IKE_ATTR_FIELD_SIZE,
attr = attribute_set_basic(attr, IKE_ATTR_GROUP_ORDER,
attribute_set_basic(
attr = attribute_set_basic(
attr = attribute_set_basic(
attr = attribute_set_basic(
attr = attribute_set_basic(
attr = attribute_set_basic(
attr = attribute_set_basic(attr,