diff --git a/CHANGES b/CHANGES
index 68e8ee7ac0..75cc85193e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+ 527.	[func]		New function dns_rdata_clone().
+
  526.	[bug]		nsupdate incorrectly refused to add RRs with a TTL
 			of 0.
 
diff --git a/lib/dns/include/dns/rdata.h b/lib/dns/include/dns/rdata.h
index a5bd18e888..5ac94c2e49 100644
--- a/lib/dns/include/dns/rdata.h
+++ b/lib/dns/include/dns/rdata.h
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rdata.h,v 1.42 2000/10/19 05:50:54 marka Exp $ */
+/* $Id: rdata.h,v 1.43 2000/10/20 13:22:36 marka Exp $ */
 
 #ifndef DNS_RDATA_H
 #define DNS_RDATA_H 1
@@ -153,6 +153,16 @@ dns_rdata_init(dns_rdata_t *rdata);
  *	'rdata' is a valid rdata (i.e. not NULL, points to a struct dns_rdata)
  */
 
+void
+dns_rdata_clone(dns_rdata_t *src, dns_rdata_t *target);
+/*
+ * Clone 'target' from 'src'.
+ *
+ * Requires:
+ *	'src' to be initalised.
+ *	'target' to be initalised.
+ */
+
 /***
  *** Comparisons
  ***/
diff --git a/lib/dns/rdata.c b/lib/dns/rdata.c
index ced254657b..03a09a08a3 100644
--- a/lib/dns/rdata.c
+++ b/lib/dns/rdata.c
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rdata.c,v 1.110 2000/10/19 05:50:53 marka Exp $ */
+/* $Id: rdata.c,v 1.111 2000/10/20 13:22:35 marka Exp $ */
 
 #include <config.h>
 #include <ctype.h>
@@ -330,6 +330,16 @@ dns_rdata_init(dns_rdata_t *rdata) {
 	/* ISC_LIST_INIT(rdata->list); */
 }
 
+void
+dns_rdata_clone(dns_rdata_t *src, dns_rdata_t *target) {
+	target->data = src->data;
+	target->length = src->length;
+	target->rdclass = src->rdclass;
+	target->type = src->type;
+	target->flags = src->flags;
+}
+
+
 /***
  *** Comparisons
  ***/