From fcba2d6ad917b04c80571b9a50d4acc88281646e Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 23 Nov 2002 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 2002-11-23

---
 pc/devether.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pc/devether.c b/pc/devether.c
index 7c91eb43f48c4886677b0b807513dcbb322e2112..eb78d517c6a4c43419b54994bd5f955e6f8d7904 100644
--- a/pc/devether.c
+++ b/pc/devether.c
@@ -228,7 +228,8 @@ etheroq(Ether* ether, Block* bp)
 
 	if(!loopback){
 		qbwrite(ether->oq, bp);
-		ether->transmit(ether);
+		if(ether->transmit != nil)
+			ether->transmit(ether);
 	} else
 		freeb(bp);