Fixed MTU method for linux TUN interface

Updated the TUN interface
Added the "MTU" method for the linux implementation of the TUN interface

1 files changed, 4 insertions, 4 deletions

diff --git a/src/tun.go b/src/tun.go
index 60732c4..85735a6 100644
--- a/src/tun.go
+++ b/src/tun.go
@@ -1,8 +1,8 @@
 package main
 
 type TUNDevice interface {
-	Read([]byte) (int, error)
-	Write([]byte) (int, error)
-	Name() string
-	MTU() int
+	Read([]byte) (int, error)  // read a packet from the device (without any additional headers)
+	Write([]byte) (int, error) // writes a packet to the device (without any additional headers)
+	MTU() (int, error)         // returns the MTU of the device
+	Name() string              // returns the current name
 }