1 files changed, 14 insertions, 1 deletions
diff --git a/test/compose/slirp4netns_opts/tests.sh b/test/compose/slirp4netns_opts/tests.sh
index 1efce45c4..2d41311ad 100644
--- a/test/compose/slirp4netns_opts/tests.sh
+++ b/test/compose/slirp4netns_opts/tests.sh
@@ -1,6 +1,19 @@
 # -*- bash -*-
 
-output="$(cat $OUTFILE)"
 expected="teststring"
 
+# Reading from the nc socket is flaky because docker-compose only starts
+# the containers. We cannot know at this point if the container did already
+# send the message. Give the container 5 seconds time to send the message
+# to prevent flakes.
+container_timeout=5
+while [ $container_timeout -gt 0 ]; do
+    output="$(< $OUTFILE)"
+    if [ -n "$output" ]; then
+        break
+    fi
+    sleep 1
+    container_timeout=$(($container_timeout - 1))
+done
+
 is "$output" "$expected" "$testname : nc received teststring"