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diff --git a/tests/sys/net/if_bridge_test.sh b/tests/sys/net/if_bridge_test.sh
--- a/tests/sys/net/if_bridge_test.sh
+++ b/tests/sys/net/if_bridge_test.sh
@@ -1114,6 +1114,63 @@
vnet_cleanup
}
+#
+# Test QinQ (802.1ad).
+#
+atf_test_case "vlan_qinq" "cleanup"
+vlan_qinq_head()
+{
+ atf_set descr 'vlan filtering with QinQ traffic'
+ atf_set require.user root
+}
+
+vlan_qinq_body()
+{
+ vnet_init
+ vnet_init_bridge
+
+ epone=$(vnet_mkepair)
+ eptwo=$(vnet_mkepair)
+
+ vnet_mkjail one ${epone}b
+ vnet_mkjail two ${eptwo}b
+
+ # Create a QinQ trunk between the two jails. The outer (provider) tag
+ # is 5, and the inner tag is 10.
+
+ jexec one ifconfig ${epone}b up
+ jexec one ifconfig ${epone}b.5 create vlanproto 802.1ad up
+ jexec one ifconfig ${epone}b.5.10 create inet 192.0.2.1/24 up
+
+ jexec two ifconfig ${eptwo}b up
+ jexec two ifconfig ${eptwo}b.5 create vlanproto 802.1ad up
+ jexec two ifconfig ${eptwo}b.5.10 create inet 192.0.2.2/24 up
+
+ bridge=$(vnet_mkbridge)
+
+ ifconfig ${bridge} up
+ ifconfig ${epone}a up
+ ifconfig ${eptwo}a up
+ ifconfig ${bridge} addm ${epone}a vlanfilter ${epone}a
+ ifconfig ${bridge} addm ${eptwo}a vlanfilter ${eptwo}a
+
+ # Right now there are no VLANs on the access list, so everything
+ # should be blocked.
+ atf_check -s exit:2 -o ignore jexec one ping -c 3 -t 1 192.0.2.2
+ atf_check -s exit:2 -o ignore jexec two ping -c 3 -t 1 192.0.2.1
+
+ # Add the provider tag to the access list; now traffic should be passed.
+ ifconfig ${bridge} +tagged ${epone}a 5
+ ifconfig ${bridge} +tagged ${eptwo}a 5
+ atf_check -s exit:0 -o ignore jexec one ping -c 3 -t 1 192.0.2.2
+ atf_check -s exit:0 -o ignore jexec two ping -c 3 -t 1 192.0.2.1
+}
+
+vlan_qinq_cleanup()
+{
+ vnet_cleanup
+}
+
atf_init_test_cases()
{
atf_add_test_case "bridge_transmit_ipv4_unicast"
@@ -1138,4 +1195,5 @@
atf_add_test_case "vlan_filtering"
atf_add_test_case "vlan_ifconfig_tagged"
atf_add_test_case "vlan_svi"
+ atf_add_test_case "vlan_qinq"
}

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