diff --git a/source/vibe/core/net.d b/source/vibe/core/net.d
index 63223ea..18f2c0c 100644
--- a/source/vibe/core/net.d
+++ b/source/vibe/core/net.d
@@ -507,7 +507,9 @@ struct NetworkAddress {
 	unittest {
 		void test(string ip, string expected = null) {
 			if(expected is null) expected = ip;
+			auto w_dns = () @trusted { return resolveHost(ip, AF_UNSPEC, true); } ().toAddressString();
 			auto res = () @trusted { return resolveHost(ip, AF_UNSPEC, false); } ().toAddressString();
+			assert(res == w_dns);
 			assert(res == expected,
 				   "IP "~ip~" yielded wrong string representation: "~res~", expected: "~expected);
 		}