Simplify transport packet padding scheme, save 1 byte

[govpn.git] / src / govpn / tap.go

diff --git a/src/govpn/tap.go b/src/govpn/tap.go
index cd1b5e84962c43d97db2633c6689f062ac95a4a8..43207c19e7cc032771d05eb27c40453fd4a4de13 100644 (file)
--- a/src/govpn/tap.go
+++ b/src/govpn/tap.go
@@ -42,9 +42,9 @@ var (
 )
 
 // Return maximal acceptable TAP interface MTU. This is daemon's MTU
-// minus nonce, MAC, packet size mark and Ethernet header sizes.
+// minus nonce, MAC, pad and Ethernet header sizes.
 func TAPMaxMTU() int {
-       return MTU - poly1305.TagSize - NonceSize - PktSizeSize - EtherSize
+       return MTU - poly1305.TagSize - NonceSize - 1 - EtherSize
 }
 
 func NewTAP(ifaceName string) (*TAP, error) {