diff -up bind-9.5.0b3/lib/isc/netaddr.c.any bind-9.5.0b3/lib/isc/netaddr.c

--- bind-9.5.0b3/lib/isc/netaddr.c.any	2008-05-05 22:01:29.000000000 +0200

+++ bind-9.5.0b3/lib/isc/netaddr.c	2008-05-05 22:24:52.000000000 +0200

@@ -69,10 +69,11 @@ isc_boolean_t

 isc_netaddr_eqprefix(const isc_netaddr_t *a, const isc_netaddr_t *b,

 		     unsigned int prefixlen)

 {

-	const unsigned char *pa, *pb;

+	const unsigned char *pa, *pb, *pany;

 	unsigned int ipabytes; /* Length of whole IP address in bytes */

 	unsigned int nbytes;   /* Number of significant whole bytes */

 	unsigned int nbits;    /* Number of significant leftover bits */

+	isc_netaddr_t any;     /* represents 0.0.0.0 or ::0 */

 	REQUIRE(a != NULL && b != NULL);

@@ -86,11 +87,15 @@ isc_netaddr_eqprefix(const isc_netaddr_t

 	case AF_INET:

 		pa = (const unsigned char *) &a->type.in;

 		pb = (const unsigned char *) &b->type.in;

+		isc_netaddr_any(&any;;

+		pany = (const unsigned char *) &any.type.in;

 		ipabytes = 4;

 		break;

 	case AF_INET6:

 		pa = (const unsigned char *) &a->type.in6;

 		pb = (const unsigned char *) &b->type.in6;

+		isc_netaddr_any6(&any;;

+		pany = (const unsigned char *) &any.type.in6;

 		ipabytes = 16;

 		break;

 	default:

@@ -99,6 +104,10 @@ isc_netaddr_eqprefix(const isc_netaddr_t

 		return (ISC_FALSE);

 	}

+	if (memcmp(pa, pany, ipabytes) == 0 ||

+	    memcmp(pb, pany, ipabytes) == 0)

+		return (ISC_TRUE);

+

 	/*

 	 * Don't crash if we get a pattern like 10.0.0.1/9999999.

 	 */