[PATCH 02/12] tun_linux: use getDummySock()

[Simon Ruderich]

Using this helper reduces code duplication.
---
 src/tun_linux.go | 23 ++---------------------
 1 file changed, 2 insertions(+), 21 deletions(-)

diff --git a/src/tun_linux.go b/src/tun_linux.go
index daa2462..b88426b 100644
--- a/src/tun_linux.go
+++ b/src/tun_linux.go
@@ -156,7 +156,6 @@ func getIFIndex(name string) (int32, error) {
 	if err != nil {
 		return 0, err
 	}
-
 	defer unix.Close(fd)
 
 	var ifr [IFReqSize]byte
@@ -177,19 +176,10 @@ func getIFIndex(name string) (int32, error) {
 }
 
 func (tun *NativeTun) setMTU(n int) error {
-
-	// open datagram socket
-
-	fd, err := unix.Socket(
-		unix.AF_INET,
-		unix.SOCK_DGRAM,
-		0,
-	)
-
+	fd, err := getDummySock()
 	if err != nil {
 		return err
 	}
-
 	defer unix.Close(fd)
 
 	// do ioctl call
@@ -212,19 +202,10 @@ func (tun *NativeTun) setMTU(n int) error {
 }
 
 func (tun *NativeTun) MTU() (int, error) {
-
-	// open datagram socket
-
-	fd, err := unix.Socket(
-		unix.AF_INET,
-		unix.SOCK_DGRAM,
-		0,
-	)
-
+	fd, err := getDummySock()
 	if err != nil {
 		return 0, err
 	}
-
 	defer unix.Close(fd)
 
 	// do ioctl call
-- 
2.15.1