From 6df30438b2f5bf8e619d80e9297721f79389964b Mon Sep 17 00:00:00 2001
From: Jarrod Johnson <jjohnson2@lenovo.com>
Date: Fri, 25 Jan 2019 10:43:20 -0500
Subject: [PATCH] Add comments to explain the hwtype change

---
 xCAT-server/lib/xcat/plugins/dhcp.pm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/xCAT-server/lib/xcat/plugins/dhcp.pm b/xCAT-server/lib/xcat/plugins/dhcp.pm
index 35424a5d5..a26c6e492 100644
--- a/xCAT-server/lib/xcat/plugins/dhcp.pm
+++ b/xCAT-server/lib/xcat/plugins/dhcp.pm
@@ -764,7 +764,9 @@ sub addnode
                         $hostname = $1 . "-hf" . $count;
                     }
                 }
-            } elsif (length($mac) == 23) {
+            } elsif (length($mac) == 23) { # 8 bytes of mac address
+		# Currently the only thing that has 8 bytes is an infiniband
+		# or infiniband like device, which is type 32 (0x20).
                 $hardwaretype = 32;
             }