From c3600d14d666743e7082178addba57c9f82f5874 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Fri, 5 Jan 2018 23:35:59 +0000
Subject: [PATCH] Implement a tun interface to reduce dependency on Water
 library

---
 src/yggdrasil/tun.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/yggdrasil/tun.go b/src/yggdrasil/tun.go
index 7c4a06e..3a81998 100644
--- a/src/yggdrasil/tun.go
+++ b/src/yggdrasil/tun.go
@@ -2,16 +2,25 @@ package yggdrasil
 
 // This manages the tun driver to send/recv packets to/from applications
 
-import water "github.com/songgao/water"
+// import water "github.com/songgao/water"
 
 const IPv6_HEADER_LENGTH = 40
 
+type tunInterface interface {
+	IsTUN() bool
+	IsTAP() bool
+	Name() string
+	Read(to []byte) (int, error)
+	Write(from []byte) (int, error)
+	Close() error
+}
+
 type tunDevice struct {
 	core  *Core
 	send  chan<- []byte
 	recv  <-chan []byte
 	mtu   int
-	iface *water.Interface
+	iface tunInterface
 }
 
 func (tun *tunDevice) init(core *Core) {