diff --git a/openstack/networking/v2/extensions/provider/results.go b/openstack/networking/v2/extensions/provider/results.go
old mode 100755
new mode 100644
index 229013b..37142e8
--- a/openstack/networking/v2/extensions/provider/results.go
+++ b/openstack/networking/v2/extensions/provider/results.go
@@ -1,6 +1,9 @@
 package provider
 
 import (
+	"encoding/json"
+	"strconv"
+
 	"github.com/gophercloud/gophercloud/openstack/networking/v2/networks"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -48,6 +51,29 @@
 	SegmentationID string `json:"provider:segmentation_id"`
 }
 
+func (n *NetworkExtAttrs) UnmarshalJSON(b []byte) error {
+	type tmp NetworkExtAttrs
+	var networkExtAttrs *struct {
+		tmp
+		SegmentationID interface{} `json:"provider:segmentation_id"`
+	}
+
+	if err := json.Unmarshal(b, &networkExtAttrs); err != nil {
+		return err
+	}
+
+	*n = NetworkExtAttrs(networkExtAttrs.tmp)
+
+	switch t := networkExtAttrs.SegmentationID.(type) {
+	case float64:
+		n.SegmentationID = strconv.FormatFloat(t, 'f', -1, 64)
+	case string:
+		n.SegmentationID = string(t)
+	}
+
+	return nil
+}
+
 // ExtractGet decorates a GetResult struct returned from a networks.Get()
 // function with extended attributes.
 func ExtractGet(r networks.GetResult) (*NetworkExtAttrs, error) {
diff --git a/openstack/networking/v2/extensions/provider/testing/results_test.go b/openstack/networking/v2/extensions/provider/testing/results_test.go
index 3b6a6fd..f6b321a 100644
--- a/openstack/networking/v2/extensions/provider/testing/results_test.go
+++ b/openstack/networking/v2/extensions/provider/testing/results_test.go
@@ -51,7 +51,7 @@
             "tenant_id": "26a7980765d0414dbc1fc1f88cdb7e6e",
             "shared": true,
             "id": "db193ab3-96e3-4cb3-8fc5-05f4296d0324",
-            "provider:segmentation_id": "1234567890",
+            "provider:segmentation_id": 1234567890,
             "provider:physical_network": null,
             "provider:network_type": "local"
         }