From 1b9c5edc6c7acbe894c4b2db3e3e4a1f1353ccc5 Mon Sep 17 00:00:00 2001
From: Johan Euphrosine <proppy@google.com>
Date: Mon, 3 Feb 2014 14:27:40 -0800
Subject: [PATCH] networkdriver: add ErrNoDefaultRoute

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: google)
---
 networkdriver/utils.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/networkdriver/utils.go b/networkdriver/utils.go
index 611ca75867..0a4ef70c95 100644
--- a/networkdriver/utils.go
+++ b/networkdriver/utils.go
@@ -2,6 +2,7 @@ package networkdriver
 
 import (
 	"encoding/binary"
+	"errors"
 	"fmt"
 	"net"
 
@@ -10,6 +11,7 @@ import (
 
 var (
 	networkGetRoutesFct = netlink.NetworkGetRoutes
+	ErrNoDefaultRoute   = errors.New("no default route")
 )
 
 func CheckNameserverOverlaps(nameservers []string, toCheck *net.IPNet) error {
@@ -103,7 +105,7 @@ func GetIfaceAddr(name string) (net.Addr, error) {
 }
 
 func GetDefaultRouteIface() (*net.Interface, error) {
-	rs, err := netlink.NetworkGetRoutes()
+	rs, err := networkGetRoutesFct()
 	if err != nil {
 		return nil, fmt.Errorf("unable to get routes: %v", err)
 	}
@@ -112,5 +114,5 @@ func GetDefaultRouteIface() (*net.Interface, error) {
 			return r.Iface, nil
 		}
 	}
-	return nil, fmt.Errorf("no default route")
+	return nil, ErrNoDefaultRoute
 }