From d6f2c883c5db8f6e46bbb62174798891635ee758 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benpicco@beuth-hochschule.de>
Date: Sun, 3 Apr 2022 19:25:22 +0200
Subject: [PATCH] examples/telnet_server: add support for LWIP

---
 examples/telnet_server/Makefile | 24 +++++++++++++++++-------
 examples/telnet_server/main.c   |  3 +--
 2 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/examples/telnet_server/Makefile b/examples/telnet_server/Makefile
index 78de41dbbdc6..07d26641254e 100644
--- a/examples/telnet_server/Makefile
+++ b/examples/telnet_server/Makefile
@@ -10,13 +10,23 @@ RIOTBASE ?= $(CURDIR)/../..
 # Include packages that pull up and auto-init the link layer.
 # NOTE: 6LoWPAN will be included if IEEE802.15.4 devices are present
 USEMODULE += netdev_default
-USEMODULE += auto_init_gnrc_netif
-# Activate ICMPv6 error messages
-USEMODULE += gnrc_icmpv6_error
-# Specify the mandatory networking modules for IPv6
-USEMODULE += gnrc_ipv6_default
-# Additional networking modules that can be dropped if not needed
-USEMODULE += gnrc_icmpv6_echo
+
+# use GNRC by default
+LWIP ?= 0
+
+ifeq (0,$(LWIP))
+  USEMODULE += auto_init_gnrc_netif
+  # Activate ICMPv6 error messages
+  USEMODULE += gnrc_icmpv6_error
+  # Specify the mandatory networking modules for IPv6
+  USEMODULE += gnrc_ipv6_default
+  # Additional networking modules that can be dropped if not needed
+  USEMODULE += gnrc_icmpv6_echo
+else
+  USEMODULE += lwip_ipv6
+  USEMODULE += lwip_netdev
+endif
+
 USEMODULE += netutils
 # Add also the shell, some shell commands
 USEMODULE += shell
diff --git a/examples/telnet_server/main.c b/examples/telnet_server/main.c
index 7cfa348591f6..419568335789 100644
--- a/examples/telnet_server/main.c
+++ b/examples/telnet_server/main.c
@@ -21,8 +21,7 @@
 #include <stdio.h>
 
 #include "net/ipv6/addr.h"
-#include "net/gnrc.h"
-#include "net/gnrc/netif.h"
+#include "net/netif.h"
 #include "net/telnet.h"
 #include "shell.h"
 #include "msg.h"