1 files changed, 6 insertions, 0 deletions
diff --git a/src/tun.go b/src/tun.go
index 85735a6..f529c54 100644
--- a/src/tun.go
+++ b/src/tun.go
@@ -1,5 +1,11 @@
 package main
 
+/*
+ * The default MTU of the new device must be 1420
+ */
+
+const DefaultMTU = 1420
+
 type TUNDevice interface {
 	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)