diff --git a/hub/executor/executor.go b/hub/executor/executor.go
index 116b0dd8..390d4304 100644
--- a/hub/executor/executor.go
+++ b/hub/executor/executor.go
@@ -57,7 +57,9 @@ func updateDNS(c *config.DNS) {
 	T.Instance().SetResolver(r)
 	if err := dns.ReCreateServer(c.Listen, r); err != nil {
 		log.Errorln("Start DNS server error: %s", err.Error())
+		return
 	}
+	log.Infoln("DNS server listening at: %s", c.Listen)
 }
 
 func updateProxies(proxies map[string]C.Proxy) {