1 files changed, 4 insertions, 1 deletions
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
index 7271559432..7846576c11 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc
@@ -431,7 +431,10 @@ static grpc_ares_request* grpc_dns_lookup_ares_impl(
   }
   if (service_config_json != nullptr) {
     grpc_ares_request_ref(r);
-    ares_search(*channel, hr->host, ns_c_in, ns_t_txt, on_txt_done_cb, r);
+    char* config_name;
+    gpr_asprintf(&config_name, "_grpc_config.%s", host);
+    ares_search(*channel, config_name, ns_c_in, ns_t_txt, on_txt_done_cb, r);
+    gpr_free(config_name);
   }
   /* TODO(zyc): Handle CNAME records here. */
   grpc_ares_ev_driver_start(exec_ctx, r->ev_driver);