From 3846e5755f01ff3fa2b4d9a30ba213efd8f52ced Mon Sep 17 00:00:00 2001
From: Kristof Provost <kp@FreeBSD.org>
Date: Tue, 5 Mar 2019 15:49:30 +0000
Subject: [PATCH] tun tests: Test renaming and destroying a tun interface in a
 vnet jail

There was a problem destroying renamed tun interfaces in vnet jails. This was
fixed in r344794. Test the previously failing scenario.

PR:		235704
MFC after:	2 weeks
---
 tests/sys/net/Makefile       |  1 +
 tests/sys/net/if_tun_test.sh | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100755 tests/sys/net/if_tun_test.sh

diff --git a/tests/sys/net/Makefile b/tests/sys/net/Makefile
index 681a1408ab1..03e0631f625 100644
--- a/tests/sys/net/Makefile
+++ b/tests/sys/net/Makefile
@@ -7,6 +7,7 @@ BINDIR=		${TESTSDIR}
 
 ATF_TESTS_SH+=	if_lagg_test
 ATF_TESTS_SH+=	if_clone_test
+ATF_TESTS_SH+=	if_tun_test
 
 # The tests are written to be run in parallel, but doing so leads to random
 # panics.  I think it's because the kernel's list of interfaces isn't properly
diff --git a/tests/sys/net/if_tun_test.sh b/tests/sys/net/if_tun_test.sh
new file mode 100755
index 00000000000..64dc004e3a0
--- /dev/null
+++ b/tests/sys/net/if_tun_test.sh
@@ -0,0 +1,30 @@
+# $FreeBSD$
+
+. $(atf_get_srcdir)/../common/vnet.subr
+
+atf_test_case "235704" "cleanup"
+235704_head()
+{
+	atf_set descr "Test PR #235704"
+	atf_set require.user root
+}
+
+235704_body()
+{
+	vnet_init
+	vnet_mkjail one
+
+	tun=$(jexec one ifconfig tun create)
+	jexec one ifconfig ${tun} name foo
+	atf_check -s exit:0 jexec one ifconfig foo destroy
+}
+
+235704_cleanup()
+{
+	vnet_cleanup
+}
+
+atf_init_test_cases()
+{
+	atf_add_test_case "235704"
+}