From d726af2cac5fb5f9aaf285fbfeb234f9a51c3140 Mon Sep 17 00:00:00 2001
From: "Martine S. Lenders" <mail@martine-lenders.eu>
Date: Fri, 3 Apr 2020 13:39:09 +0200
Subject: [PATCH] dist/tools/*/start_network.sh: ensure TUN/TAP interface

Previously, when the creation of the TUN/TAP interface failed in one of
the `start_network.sh` scripts, the script will fail with a cryptic
error like

> dist/tools/ethos/start_network.sh: 68: [: -eq: unexpected operator

This fix ensures, that the value of this variable checked is always set
such that in the error case, `ethos`/`sliptty` won't start.
---
 dist/tools/ethos/start_network.sh   | 1 +
 dist/tools/sliptty/start_network.sh | 1 +
 2 files changed, 2 insertions(+)

diff --git a/dist/tools/ethos/start_network.sh b/dist/tools/ethos/start_network.sh
index 7b7378994e..0746d8c32c 100755
--- a/dist/tools/ethos/start_network.sh
+++ b/dist/tools/ethos/start_network.sh
@@ -42,6 +42,7 @@ PORT=$1
 TAP=$2
 PREFIX=$3
 BAUDRATE=115200
+START_ETHOS=1
 
 [ -z "${PORT}" -o -z "${TAP}" -o -z "${PREFIX}" ] && {
     echo "usage: $0 [-e|--ethos-only] <serial-port> <tap-device> <prefix> " \
diff --git a/dist/tools/sliptty/start_network.sh b/dist/tools/sliptty/start_network.sh
index 51543d2f97..3856f044a8 100755
--- a/dist/tools/sliptty/start_network.sh
+++ b/dist/tools/sliptty/start_network.sh
@@ -6,6 +6,7 @@ TUN=sl0
 TUN_GLB="fdea:dbee:f::1/64"
 UHCPD_PID=
 CREATED_IFACE=0
+START_SLIP=1
 
 SUDO=${SUDO:-sudo}