Signed-off-by: Joe Stringer <j...@ovn.org>
---
 tests/system-traffic.at | 57 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/tests/system-traffic.at b/tests/system-traffic.at
index 88f02b2a8e77..28adbdcb9ee6 100644
--- a/tests/system-traffic.at
+++ b/tests/system-traffic.at
@@ -1424,6 +1424,63 @@ NS_CHECK_EXEC([at_ns0], [ping -s 3200 -q -c 3 -i 0.3 -w 
2 10.1.1.100 | FORMAT_PI
 OVS_TRAFFIC_VSWITCHD_STOP
 AT_CLEANUP
 
+AT_SETUP([conntrack - IPv6 Fragmentation over vxlan])
+AT_SKIP_IF([! ip link help 2>&1 | grep vxlan >/dev/null])
+CHECK_CONNTRACK()
+
+OVS_TRAFFIC_VSWITCHD_START()
+ADD_BR([br-underlay])
+AT_CHECK([ovs-ofctl add-flow br-underlay "actions=normal"])
+
+ADD_NAMESPACES(at_ns0)
+
+dnl Sending ping through conntrack
+AT_DATA([flows.txt], [dnl
+priority=1,action=drop
+priority=100,in_port=1,ipv6,action=ct(commit,zone=9),LOCAL
+priority=100,in_port=LOCAL,ipv6,action=ct(table=1,zone=9)
+table=1,priority=100,in_port=LOCAL,ct_state=+trk+est,ipv6,action=1
+
+dnl Neighbour Discovery
+priority=1000,icmp6,icmp_type=135,action=normal
+priority=1000,icmp6,icmp_type=136,action=normal
+])
+
+AT_CHECK([ovs-ofctl --bundle add-flows br0 flows.txt])
+
+dnl Set up underlay link from host into the namespace using veth pair.
+ADD_VETH(p0, at_ns0, br-underlay, "172.31.1.1/24")
+AT_CHECK([ip addr add dev br-underlay "172.31.1.100/24"])
+AT_CHECK([ip link set dev br-underlay up])
+
+dnl Set up tunnel endpoints on OVS outside the namespace and with a native
+dnl linux device inside the namespace.
+ADD_OVS_TUNNEL([vxlan], [br0], [at_ns0], [172.31.1.1], ["fc00::2/96"])
+ADD_NATIVE_TUNNEL([vxlan], [at_vxlan1], [at_ns0], [172.31.1.100], 
["fc00::1/96"],
+                  [id 0 dstport 4789])
+
+dnl Without this sleep, we get occasional failures due to the following error:
+dnl "connect: Cannot assign requested address"
+sleep 2;
+
+dnl First, check the underlay
+NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 172.31.1.100 | FORMAT_PING], 
[0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+dnl Okay, now check the overlay with different packet sizes
+NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00::2 | FORMAT_PING], 
[0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+NS_CHECK_EXEC([at_ns0], [ping6 -s 1600 -q -c 3 -i 0.3 -w 2 fc00::2 | 
FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+NS_CHECK_EXEC([at_ns0], [ping6 -s 3200 -q -c 3 -i 0.3 -w 2 fc00::2 | 
FORMAT_PING], [0], [dnl
+3 packets transmitted, 3 received, 0% packet loss, time 0ms
+])
+
+OVS_TRAFFIC_VSWITCHD_STOP
+AT_CLEANUP
 
 AT_SETUP([conntrack - resubmit to ct multiple times])
 CHECK_CONNTRACK()
-- 
2.1.4

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