diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 64174613a..8ddfe2b18 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -6751,7 +6751,9 @@ table=8             ip,nw_dst=10.1.1.2 action=output:ovs-p1

 AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])

-NS_CHECK_EXEC([at_ns1], [echo "foobar" |nc $NC_EOF_OPT 10.254.254.1 1234])
+for i in $(seq 10); do
+  NS_CHECK_EXEC([at_ns1], [echo "foobar" |nc $NC_EOF_OPT 10.254.254.1 1234])
+done

 AT_CHECK([ovs-appctl dpctl/dump-conntrack | FORMAT_CT(10.254.254)], [0], [dnl
 tcp,orig=(src=10.1.1.2,dst=10.254.254.1,sport=<cleared>,dport=<cleared>),reply=(src=10.254.254.1,dst=10.1.1.2,sport=<cleared>,dport=<cleared>),mark=1,protoinfo=(state=<cleared>)