From e7b44be2e3193db4fb444b53f669ddb9fec7c76b Mon Sep 17 00:00:00 2001
From: Youngjae Lee <ls4154.lee@gmail.com>
Date: Sat, 1 Jun 2024 13:42:28 +0900
Subject: [PATCH] fix incorrect timestamp in uuid v6

---
 version6.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/version6.go b/version6.go
index 339a959..77e0cef 100644
--- a/version6.go
+++ b/version6.go
@@ -39,12 +39,16 @@ func NewV6() (UUID, error) {
 	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 	*/
 
-	binary.BigEndian.PutUint64(uuid[0:], uint64(now))
+	timeHigh := uint32((now >> 28) & 0xffffffff)
+	timeMid := uint16((now >> 12) & 0xffff)
+	timeLow := uint16(now & 0x0fff)
+	timeLow |= 0x6000 // Version 6
+
+	binary.BigEndian.PutUint32(uuid[0:], timeHigh)
+	binary.BigEndian.PutUint16(uuid[4:], timeMid)
+	binary.BigEndian.PutUint16(uuid[6:], timeLow)
 	binary.BigEndian.PutUint16(uuid[8:], seq)
 
-	uuid[6] = 0x60 | (uuid[6] & 0x0F)
-	uuid[8] = 0x80 | (uuid[8] & 0x3F)
-
 	nodeMu.Lock()
 	if nodeID == zeroID {
 		setNodeInterface("")