Apply by doing:
	cd /usr/src
	patch -p0 < 007_bind.patch

And then rebuild and install bind:
	cd usr.sbin/bind
	make -f Makefile.bsd-wrapper obj
	make -f Makefile.bsd-wrapper depend
	make -f Makefile.bsd-wrapper
	make -f Makefile.bsd-wrapper install

Index: usr.sbin/bind/bin/named/update.c
===================================================================
--- usr.sbin/bind/bin/named/update.c	(revision 1875)
+++ usr.sbin/bind/bin/named/update.c	(working copy)
@@ -861,7 +861,11 @@
 			if (type == dns_rdatatype_rrsig ||
 			    type == dns_rdatatype_sig)
 				covers = dns_rdata_covers(&t->rdata);
-			else
+			else if (type == dns_rdatatype_any) {
+				dns_db_detachnode(db, &node);
+				dns_diff_clear(&trash);
+				return (DNS_R_NXRRSET);
+			} else
 				covers = 0;
 
 			/*