diff --git a/tests/nicira_dec_ttl.py b/tests/nicira_dec_ttl.py
new file mode 100644
index 0000000..c5445f3
--- /dev/null
+++ b/tests/nicira_dec_ttl.py
@@ -0,0 +1,48 @@
+import logging
+import struct
+
+from oftest import config
+import of10 as ofp
+import oftest.base_tests as base_tests
+
+from oftest.testutils import *
+
+class action_nx_dec_ttl(ofp.action.action_vendor):
+    def __init__(self):
+        ofp.action.action_vendor.__init__(self)
+        self.vendor = 0x00002320
+
+    def pack(self):
+        return ofp.action.action_vendor.pack(self) + struct.pack("!HHL", 18, 0x0, 0x0)
+
+    def __len__(self):
+        return 16
+
+    def show(self, prefix=''):
+        return prefix + 'dec_ttl: ' + '\n' + ofp.action.action_vendor.show(self)
+
+@nonstandard
+class TtlDecrement(base_tests.SimpleDataPlane):
+    def runTest(self):
+        of_ports = config["port_map"].keys()
+        of_ports.sort()
+        self.assertTrue(len(of_ports) >= 3, "Not enough ports for test")
+        portA = of_ports[0]
+        portB = of_ports[1]
+        portC = of_ports[2]
+
+        outpkt = simple_tcp_packet(pktlen=100, ip_ttl=3)
+        msg = ofp.message.packet_out(in_port=ofp.OFPP_NONE,
+                                     data=str(outpkt),
+                                     actions=[
+                                         action_nx_dec_ttl(),
+                                         ofp.action.output(port=portA),
+                                         action_nx_dec_ttl(),
+                                         ofp.action.output(port=portB),
+                                         action_nx_dec_ttl(),
+                                         ofp.action.output(port=portC)])
+        self.controller.message_send(msg)
+
+        receive_pkt_check(self.dataplane, simple_tcp_packet(ip_ttl=2), [portA], [], self)
+        receive_pkt_check(self.dataplane, simple_tcp_packet(ip_ttl=1), [portB], [], self)
+        receive_pkt_check(self.dataplane, simple_tcp_packet(ip_ttl=0), [], [portC], self)