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-rw-r--r--test/test_neighbor.py64
1 files changed, 64 insertions, 0 deletions
diff --git a/test/test_neighbor.py b/test/test_neighbor.py
index b4a6878d759..1c7cc2678ff 100644
--- a/test/test_neighbor.py
+++ b/test/test_neighbor.py
@@ -657,6 +657,70 @@ class ARPTestCase(VppTestCase):
self.pg2.admin_down()
self.pg1.admin_down()
+ def test_proxy_mirror_arp(self):
+ """ Interface Mirror Proxy ARP """
+
+ #
+ # When VPP has an interface whose address is also applied to a TAP
+ # interface on the host, then VPP's TAP interface will be unnumbered
+ # to the 'real' interface and do proxy ARP from the host.
+ # the curious aspect of this setup is that ARP requests from the host
+ # will come from the VPP's own address.
+ #
+ self.pg0.generate_remote_hosts(2)
+
+ arp_req_from_me = (Ether(src=self.pg2.remote_mac,
+ dst="ff:ff:ff:ff:ff:ff") /
+ ARP(op="who-has",
+ hwsrc=self.pg2.remote_mac,
+ pdst=self.pg0.remote_hosts[1].ip4,
+ psrc=self.pg0.local_ip4))
+
+ #
+ # Configure Proxy ARP for the subnet on PG0addresses on pg0
+ #
+ self.vapi.proxy_arp_add_del(self.pg0._local_ip4n_subnet,
+ self.pg0._local_ip4n_bcast)
+
+ # Make pg2 un-numbered to pg0
+ #
+ self.pg2.set_unnumbered(self.pg0.sw_if_index)
+
+ #
+ # Enable pg2 for proxy ARP
+ #
+ self.pg2.set_proxy_arp()
+
+ #
+ # Send the ARP request with an originating address that
+ # is VPP's own address
+ #
+ self.pg2.add_stream(arp_req_from_me)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+ self.verify_arp_resp(rx[0],
+ self.pg2.local_mac,
+ self.pg2.remote_mac,
+ self.pg0.remote_hosts[1].ip4,
+ self.pg0.local_ip4)
+
+ #
+ # validate we have not learned an ARP entry as a result of this
+ #
+ self.assertFalse(find_nbr(self,
+ self.pg2.sw_if_index,
+ self.pg0.local_ip4))
+
+ #
+ # cleanup
+ #
+ self.pg2.set_proxy_arp(0)
+ self.vapi.proxy_arp_add_del(self.pg0._local_ip4n_subnet,
+ self.pg0._local_ip4n_bcast,
+ is_add=0)
+
def test_proxy_arp(self):
""" Proxy ARP """