From 8260941c76193b4e2c40dcc439526b269e9f208e Mon Sep 17 00:00:00 2001
From: Alexander Motin <mav@FreeBSD.org>
Date: Sat, 30 Jul 2016 15:51:16 +0000
Subject: [PATCH] Make MAC address generation more random.

'ticks' approach does not work at boot time.
---
 sys/dev/ntb/if_ntb/if_ntb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/dev/ntb/if_ntb/if_ntb.c b/sys/dev/ntb/if_ntb/if_ntb.c
index 586b509f5a0..c67ae0dc682 100644
--- a/sys/dev/ntb/if_ntb/if_ntb.c
+++ b/sys/dev/ntb/if_ntb/if_ntb.c
@@ -493,10 +493,9 @@ static void
 create_random_local_eui48(u_char *eaddr)
 {
 	static uint8_t counter = 0;
-	uint32_t seed = ticks;
 
 	eaddr[0] = EUI48_LOCALLY_ADMINISTERED;
-	memcpy(&eaddr[1], &seed, sizeof(uint32_t));
+	arc4rand(&eaddr[1], 4, 0);
 	eaddr[5] = counter++;
 }