diff --git a/src/tests/test-route-manager.c b/src/tests/test-route-manager.c
index fd9af1bb20..86d52dff89 100644
--- a/src/tests/test-route-manager.c
+++ b/src/tests/test-route-manager.c
@@ -376,7 +376,7 @@ setup_dev0_ip6 (int ifindex)
 	/* Add an address so that a route to the gateway below gets added. */
 	nm_platform_ip6_address_add (NM_PLATFORM_GET,
 	                             ifindex,
-	                             *nmtst_inet6_from_string ("2001:db8:8086::2"),
+	                             *nmtst_inet6_from_string ("2001:db8:8086::666"),
 	                             in6addr_any,
 	                             64,
 	                             3600,