From 2fbf20c9e41b3e889e9a22faa97038efbdaa9f45 Mon Sep 17 00:00:00 2001
From: fumiama <s862105088@gmail.com>
Date: Sat, 1 Jan 2022 17:49:37 +0800
Subject: [PATCH] fix out of bound

---
 .gitignore      | 1 +
 gold/link/me.go | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 4482273..4879299 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 
 .DS_Store
 config.yaml
+WireGold
diff --git a/gold/link/me.go b/gold/link/me.go
index 8aef9f2..b64acb6 100644
--- a/gold/link/me.go
+++ b/gold/link/me.go
@@ -155,7 +155,7 @@ func (p PacketID) issame(packet []byte) bool {
 func (m *Me) sendAllSameDst(packet []byte) (n int, rem []byte) {
 	rem = packet
 	if !waterutil.IsIPv4(packet) {
-		for waterutil.IsIPv6(rem) {
+		for len(rem) > 20 && waterutil.IsIPv6(rem) {
 			pktl := int(binary.BigEndian.Uint16(packet[4:6])) + 40
 			if pktl > len(rem) {
 				return