virtual interfaces operations & unit tests; networks unit tests
diff --git a/rackspace/networking/v2/virtualinterfaces/requests.go b/rackspace/networking/v2/virtualinterfaces/requests.go
index 4f91359..adb3184 100644
--- a/rackspace/networking/v2/virtualinterfaces/requests.go
+++ b/rackspace/networking/v2/virtualinterfaces/requests.go
@@ -1 +1,51 @@
 package virtualinterfaces
+
+import (
+	"github.com/rackspace/gophercloud"
+	"github.com/rackspace/gophercloud/pagination"
+
+	"github.com/racker/perigee"
+)
+
+// List returns a Pager which allows you to iterate over a collection of
+// networks. It accepts a ListOpts struct, which allows you to filter and sort
+// the returned collection for greater efficiency.
+func List(c *gophercloud.ServiceClient, instanceID string) pagination.Pager {
+	createPage := func(r pagination.PageResult) pagination.Page {
+		return VirtualInterfacePage{pagination.SinglePageBase(r)}
+	}
+
+	return pagination.NewPager(c, listURL(c, instanceID), createPage)
+}
+
+// Create creates a new virtual interface for a network and attaches the network
+// to the server instance.
+func Create(c *gophercloud.ServiceClient, instanceID, networkID string) CreateResult {
+	var res CreateResult
+
+	reqBody := map[string]map[string]string{
+		"virtual_interface": {
+			"network_id": networkID,
+		},
+	}
+
+	// Send request to API
+	_, res.Err = perigee.Request("POST", createURL(c, instanceID), perigee.Options{
+		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		ReqBody:     &reqBody,
+		Results:     &res.Body,
+		OkCodes:     []int{201, 202},
+	})
+	return res
+}
+
+// Delete deletes the interface with interfaceID attached to the instance with
+// instanceID.
+func Delete(c *gophercloud.ServiceClient, instanceID, interfaceID string) DeleteResult {
+	var res DeleteResult
+	_, res.Err = perigee.Request("DELETE", deleteURL(c, instanceID, interfaceID), perigee.Options{
+		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		OkCodes:     []int{204},
+	})
+	return res
+}