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diff -pruN bind-9.9.4-P1/bin/named/query.c bind-9.9.4-P2/bin/named/query.c
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--- bind-9.9.4-P1/bin/named/query.c	2013-10-16 01:04:32.000000000 +0200
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+++ bind-9.9.4-P2/bin/named/query.c	2013-12-20 01:28:28.000000000 +0100
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@@ -5260,8 +5260,7 @@ query_findclosestnsec3(dns_name_t *qname
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 	dns_fixedname_t fixed;
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 	dns_hash_t hash;
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 	dns_name_t name;
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-	int order;
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-	unsigned int count;
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+	unsigned int skip = 0, labels;
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 	dns_rdata_nsec3_t nsec3;
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 	dns_rdata_t rdata = DNS_RDATA_INIT;
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 	isc_boolean_t optout;
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@@ -5276,6 +5275,7 @@ query_findclosestnsec3(dns_name_t *qname
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 	dns_name_init(&name, NULL);
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 	dns_name_clone(qname, &name);
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+	labels = dns_name_countlabels(&name);
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 	dns_clientinfomethods_init(&cm, ns_client_sourceip);
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 	dns_clientinfo_init(&ci, client);
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@@ -5309,13 +5309,14 @@ query_findclosestnsec3(dns_name_t *qname
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 		dns_rdata_reset(&rdata);
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 		optout = ISC_TF((nsec3.flags & DNS_NSEC3FLAG_OPTOUT) != 0);
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 		if (found != NULL && optout &&
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-		    dns_name_fullcompare(&name, dns_db_origin(db), &order,
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-					 &count) == dns_namereln_subdomain) {
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+		    dns_name_issubdomain(&name, dns_db_origin(db)))
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+		{
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 			dns_rdataset_disassociate(rdataset);
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 			if (dns_rdataset_isassociated(sigrdataset))
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 				dns_rdataset_disassociate(sigrdataset);
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-			count = dns_name_countlabels(&name) - 1;
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-			dns_name_getlabelsequence(&name, 1, count, &name);
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+			skip++;
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+			dns_name_getlabelsequence(qname, skip, labels - skip,
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+						  &name);
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 			ns_client_log(client, DNS_LOGCATEGORY_DNSSEC,
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 				      NS_LOGMODULE_QUERY, ISC_LOG_DEBUG(3),
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 				      "looking for closest provable encloser");
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@@ -5333,7 +5334,11 @@ query_findclosestnsec3(dns_name_t *qname
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 		ns_client_log(client, DNS_LOGCATEGORY_DNSSEC,
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 			      NS_LOGMODULE_QUERY, ISC_LOG_WARNING,
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 			      "expected covering NSEC3, got an exact match");
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-	if (found != NULL)
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+	if (found == qname) {
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+		if (skip != 0U)
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+			dns_name_getlabelsequence(qname, skip, labels - skip,
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+						  found);
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+	} else if (found != NULL)
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 		dns_name_copy(&name, found, NULL);
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 	return;
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 }