diff --git a/tests/lib/ippool_test.c b/tests/lib/ippool_test.c
index f38c1be..ea56edd 100644
--- a/tests/lib/ippool_test.c
+++ b/tests/lib/ippool_test.c
@@ -13,36 +13,47 @@
 #include "../../lib/syserr.h"
 
 
-static struct ippool_t *create_pool(const char *prefix_str, unsigned int flags)
+static struct ippool_t *create_pool(const char *prefix_str, unsigned int flags, char **blacklist, size_t blacklist_size)
 {
+	struct in46_prefix *blacklist_pfx;
 	struct ippool_t *pool;
 	struct in46_prefix pfx;
 	size_t t;
 	int rc;
+	int i;
+
+	blacklist_pfx = calloc(blacklist_size, sizeof(struct in46_prefix));
+	for (i = 0; i < blacklist_size; i++) {
+		rc = ippool_aton(&blacklist_pfx[i].addr, &t, blacklist[i], 0);
+		OSMO_ASSERT(rc == 0);
+		pfx.prefixlen = t;
+	}
 
 	/* dynamic-only v4 */
 
-	rc = ippool_aton(&pfx.addr, &t, prefix_str, flags);
+	rc = ippool_aton(&pfx.addr, &t, prefix_str, 0);
 	OSMO_ASSERT(rc == 0);
 	pfx.prefixlen = t;
 
-	rc = ippool_new(&pool, &pfx, NULL, flags);
+	rc = ippool_new(&pool, &pfx, NULL, flags, blacklist_pfx, blacklist_size);
 	OSMO_ASSERT(rc == 0);
 
 	//ippool_printaddr(pool);
 
+	free(blacklist_pfx);
+
 	return pool;
 }
 
-static void test_pool_size(const char *pfx, unsigned int flags, unsigned int expected_size)
+static void test_pool_size(const char *pfx, unsigned int flags, char **blacklist, size_t blacklist_size, unsigned int expected_size)
 {
 	struct ippool_t *pool;
 	struct ippoolm_t *member;
 	struct in46_addr addr;
 	int i, rc, n;
 
-	printf("testing pool for prefix %s, flags=0x%x, expected_size=%u\n", pfx, flags, expected_size);
-	pool = create_pool(pfx, flags);
+	printf("testing pool for prefix %s, flags=0x%x, blacklist_size=%lu, expected_size=%u\n", pfx, flags, blacklist_size, expected_size);
+	pool = create_pool(pfx, flags, blacklist, blacklist_size);
 	OSMO_ASSERT(pool->listsize == expected_size);
 
 	memset(&addr, 0, sizeof(addr));
@@ -91,19 +102,23 @@
 static void test_pool_sizes(void)
 {
 	/* 256 addresses [0..255] */
-	test_pool_size("192.168.23.0/24", 0, 256);
+	test_pool_size("192.168.23.0/24", 0, NULL, 0, 256);
 
 	/* 255 addresses [1..255] */
-	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK, 255);
+	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK, NULL, 0, 255);
 
 	/* 254 addresses [1..254] */
-	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, 254);
+	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, NULL, 0, 254);
 
 	/* 65534 addresses [0.1..255.254] */
-	test_pool_size("192.168.0.0/16", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, 65534);
+	test_pool_size("192.168.0.0/16", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, NULL, 0, 65534);
 
 	/* 256 prefixes of /64 each */
-	test_pool_size("2001:DB8::/56", 0, 256);
+	test_pool_size("2001:DB8::/56", 0, NULL, 0, 256);
+
+	/* 253 addresses [1..254] & exclude 192.168.23.1/24 */
+	char *blacklist[] = {"176.16.222.10/24", "192.168.23.1/24", "192.168.38.2/24"};
+	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, blacklist, 3, 253);
 }
 
 int main(int argc, char **argv)