+#if HAVE_IPV6
+int af;
+#endif
+
+/* If we are in the test harness, a name ending in .test.again.dns always
+forces a temporary error response. */
+
+if (running_in_test_harness)
+ {
+ uschar *endname = host->name + Ustrlen(host->name);
+ if (Ustrcmp(endname - 14, "test.again.dns") == 0)
+ return HOST_FIND_AGAIN;
+ }