diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 8c7117e2c337..7b3e6cc56935 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -1016,6 +1016,21 @@ signal_address_tests()
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "signal invalid addresses" 1 1 1
 	chk_add_nr 3 3
+
+	# signal addresses race test
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 4 4
+	ip netns exec $ns2 ./pm_nl_ctl limits 4 4
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.1.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags signal
+	run_tests $ns1 $ns2 10.0.1.1
+	chk_add_nr 4 4
 }
 
 link_failure_tests()