From b2cdb23fc0c9219c8413e3b906736dc10f398bc8 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Tue, 15 Jul 2025 18:25:09 +0000
Subject: [PATCH] Cast wider before shifting.

---
 MACLookup.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MACLookup.cc b/MACLookup.cc
index 2f9848ba1..ab9c013a5 100644
--- a/MACLookup.cc
+++ b/MACLookup.cc
@@ -188,7 +188,7 @@ const char *MACPrefix2Corp(const u8 *prefix) {
   mac_prefix_init();
 
   /* MA-S: 36 bits (9 nibbles)*/
-  key = ((u64)prefix[0] << 28) + (prefix[1] << 20) + (prefix[2] << 12) + (prefix[3] << 4) + (prefix[4] >> 4);
+  key = ((u64)prefix[0] << 28) + ((u64)prefix[1] << 20) + ((u64)prefix[2] << 12) + ((u64)prefix[3] << 4) + (prefix[4] >> 4);
   corp = findMACEntry(((u64)9 << 36) + key);
   if (corp)
     return corp;