Unit tests for Security Group Rules with ICMP values of 0
diff --git a/openstack/compute/v2/extensions/defsecrules/fixtures.go b/openstack/compute/v2/extensions/defsecrules/fixtures.go
index c28e492..2870b6a 100644
--- a/openstack/compute/v2/extensions/defsecrules/fixtures.go
+++ b/openstack/compute/v2/extensions/defsecrules/fixtures.go
@@ -72,6 +72,41 @@
 	})
 }
 
+func mockCreateRuleResponseICMPZero(t *testing.T) {
+	th.Mux.HandleFunc(rootPath, func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		th.TestJSONRequest(t, r, `
+{
+  "security_group_default_rule": {
+    "ip_protocol": "ICMP",
+    "from_port": 0,
+    "to_port": 0,
+    "cidr": "10.10.12.0/24"
+  }
+}
+	`)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+{
+  "security_group_default_rule": {
+    "from_port": 0,
+    "id": "{ruleID}",
+    "ip_protocol": "ICMP",
+    "ip_range": {
+      "cidr": "10.10.12.0/24"
+    },
+    "to_port": 0
+  }
+}
+`)
+	})
+}
+
 func mockGetRuleResponse(t *testing.T, ruleID string) {
 	url := rootPath + "/" + ruleID
 	th.Mux.HandleFunc(url, func(w http.ResponseWriter, r *http.Request) {
diff --git a/openstack/compute/v2/extensions/defsecrules/requests_test.go b/openstack/compute/v2/extensions/defsecrules/requests_test.go
index d4ebe87..1ab6637 100644
--- a/openstack/compute/v2/extensions/defsecrules/requests_test.go
+++ b/openstack/compute/v2/extensions/defsecrules/requests_test.go
@@ -69,6 +69,32 @@
 	th.AssertDeepEquals(t, expected, group)
 }
 
+func TestCreateICMPZero(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	mockCreateRuleResponseICMPZero(t)
+
+	opts := CreateOpts{
+		IPProtocol: "ICMP",
+		FromPort:   0,
+		ToPort:     0,
+		CIDR:       "10.10.12.0/24",
+	}
+
+	group, err := Create(client.ServiceClient(), opts).Extract()
+	th.AssertNoErr(t, err)
+
+	expected := &DefaultRule{
+		ID:         ruleID,
+		FromPort:   0,
+		ToPort:     0,
+		IPProtocol: "ICMP",
+		IPRange:    secgroups.IPRange{CIDR: "10.10.12.0/24"},
+	}
+	th.AssertDeepEquals(t, expected, group)
+}
+
 func TestGet(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()