XN_FLAG_DN_REV
{ "dn_rev", XN_FLAG_DN_REV, 0 },
if (flags & XN_FLAG_DN_REV)
#define XN_FLAG_RFC2253 (ASN1_STRFLGS_RFC2253 | XN_FLAG_SEP_COMMA_PLUS | XN_FLAG_DN_REV | XN_FLAG_FN_SN | XN_FLAG_DUMP_UNKNOWN_FIELDS)