diff --git a/libnvme/src/nvme/fabrics.c b/libnvme/src/nvme/fabrics.c
index 6917e66141..3ca0f22518 100644
--- a/libnvme/src/nvme/fabrics.c
+++ b/libnvme/src/nvme/fabrics.c
@@ -1193,8 +1193,12 @@ static int nvmf_connect_disc_entry(nvme_host_t h,
 		c->cfg.disable_sqflow = true;
 
 	if (e->trtype == NVMF_TRTYPE_TCP &&
-	    e->tsas.tcp.sectype != NVMF_TCP_SECTYPE_NONE)
-		c->cfg.tls = true;
+	    e->tsas.tcp.sectype != NVMF_TCP_SECTYPE_NONE) {
+		if (e->treq & NVMF_TREQ_REQUIRED)
+			c->cfg.tls = true;
+		else if (e->treq & NVMF_TREQ_NOT_REQUIRED)
+			c->cfg.concat = true;
+	}
 
 	ret = nvmf_add_ctrl(h, c, cfg);
 	if (!ret) {
@@ -2313,6 +2317,12 @@ static int nvmf_create_discovery_ctrl(struct nvme_global_ctx *ctx,
 		return -ENOMEM;
 	}
 
+	ret = nvme_open(ctx, c->name, &c->hdl);
+	if (ret) {
+		nvme_msg(ctx, LOG_ERR, "failed to open %s\n", c->name);
+		return ret;
+	}
+
 	/* Find out the name of discovery controller */
 	ret = nvme_ctrl_identify(c, id);
 	if (ret)  {