From 53aadcc90931dfa150f76ce9a5f9e8f3e43d57df Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 27 Mar 2007 14:31:52 -0700
Subject: [IPV6]: Set IF_READY if the device is up and has carrier

We still need to set the IF_READY flag in ipv6_add_dev for the case
where all addresses (including the link-local) are deleted and then
recreated.  In that case the IPv6 device too will be destroyed and
then recreated.

In order to prevent the original problem, we simply ensure that
the device is up before setting IF_READY.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 1b61699..7552663 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -342,6 +342,9 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
 	}
 #endif
 
+	if (netif_running(dev) && netif_carrier_ok(dev))
+		ndev->if_flags |= IF_READY;
+
 	ipv6_mc_init_dev(ndev);
 	ndev->tstamp = jiffies;
 #ifdef CONFIG_SYSCTL
-- 
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