PRINTOPT
PRINTOPT(RES_INIT, "INIT");
PRINTOPT(RES_DEBUG, "DEBUG");
PRINTOPT(RES_USEVC, "USEVC");
PRINTOPT(RES_IGNTC, "IGNTC");
PRINTOPT(RES_RECURSE, "RECURSE");
PRINTOPT(RES_DEFNAMES, "DEFNAMES");
PRINTOPT(RES_STAYOPEN, "STAYOPEN");
PRINTOPT(RES_DNSRCH, "DNSRCH");
PRINTOPT(RES_NOALIASES, "NOALIASES");
PRINTOPT(RES_USE_EDNS0, "USE_EDNS0");
PRINTOPT(RES_USE_DNSSEC, "USE_DNSSEC");
PRINTOPT(RES_USE_CD, "USE_CD");
PRINTOPT(RES_TRUSTAD, "TRUSTAD");