From edc9f99bb63066bab12367ca23dbb6a46ca89803 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <royger@FreeBSD.org>
Date: Thu, 21 May 2015 10:28:33 +0000
Subject: [PATCH] MFC: r282908

netfront: wait for backend to connect before sending ARP

Sponsored by: Citrix Systems R&D
---
 sys/dev/xen/netfront/netfront.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/sys/dev/xen/netfront/netfront.c b/sys/dev/xen/netfront/netfront.c
index 3c7636f20acf..26378cf0bb4c 100644
--- a/sys/dev/xen/netfront/netfront.c
+++ b/sys/dev/xen/netfront/netfront.c
@@ -683,7 +683,6 @@ netfront_backend_changed(device_t dev, XenbusState newstate)
 	switch (newstate) {
 	case XenbusStateInitialising:
 	case XenbusStateInitialised:
-	case XenbusStateConnected:
 	case XenbusStateUnknown:
 	case XenbusStateClosed:
 	case XenbusStateReconfigured:
@@ -695,13 +694,15 @@ netfront_backend_changed(device_t dev, XenbusState newstate)
 		if (network_connect(sc) != 0)
 			break;
 		xenbus_set_state(dev, XenbusStateConnected);
-#ifdef INET
-		netfront_send_fake_arp(dev, sc);
-#endif
 		break;
 	case XenbusStateClosing:
 		xenbus_set_state(dev, XenbusStateClosed);
 		break;
+	case XenbusStateConnected:
+#ifdef INET
+		netfront_send_fake_arp(dev, sc);
+#endif
+		break;
 	}
 }