1 files changed, 2 insertions, 0 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 b3d6437e9a..485998f5e4 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
@@ -49,6 +49,8 @@ static gpr_mu g_init_mu;
 grpc_core::TraceFlag grpc_trace_cares_address_sorting(false,
                                                       "cares_address_sorting");
 
+grpc_core::TraceFlag grpc_trace_cares_resolver(false, "cares_resolver");
+
 struct grpc_ares_request {
   /** indicates the DNS server to use, if specified */
   struct ares_addr_port_node dns_server_addr;