1 files changed, 5 insertions, 3 deletions

diff --git a/src/transport/test_transport_simple_send_string.sh b/src/transport/test_transport_simple_send_string.sh
index b2bd05d5f..211abb494 100755
--- a/src/transport/test_transport_simple_send_string.sh
+++ b/src/transport/test_transport_simple_send_string.sh
@@ -11,9 +11,11 @@ EOF
 if ! [ -d "/run/netns" ]; then
     echo You have to create the directory /run/netns.
 fi
-if  [ "$(cat /proc/sys/kernel/unprivileged_userns_clone)" == 1 ]; then
-    exec unshare -r -nmU bash -c "mount -t tmpfs --make-rshared tmpfs /run/netns; ./test_transport_start_with_config -s '$string'"
-else
+if [ -f /proc/sys/kernel/unprivileged_userns_clone ]; then
+  if  [ "$(cat /proc/sys/kernel/unprivileged_userns_clone)" != 1 ]; then
     echo -e "Error during test setup: The kernel parameter kernel.unprivileged_userns_clone has to be set to 1! One has to execute\n\n sysctl kernel.unprivileged_userns_clone=1\n"
     exit 78
+  fi
 fi
+
+exec unshare -r -nmU bash -c "mount -t tmpfs --make-rshared tmpfs /run/netns; ./test_transport_start_with_config -s '$string'"