Commit 99081049 authored by Kristian Slavov's avatar Kristian Slavov Committed by David S. Miller

[IPV6]: Address autoconfiguration does not work after device down/up cycle

If you set network interface down and up again, the IPv6 address
autoconfiguration does not work. 'ip addr' shows that the link-local
address is in tentative state. We don't even react to periodical router
advertisements.

During NETDEV_DOWN we clear IF_READY, and we don't set it back in
NETDEV_UP. While starting to perform DAD on the link-local address, we
notice that the device is not in IF_READY, and we abort autoconfiguration
process (which would eventually send router solicitations).
Acked-by: default avatarJuha-Matti Tapio <jmtapio@verkkotelakka.net>
Acked-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b88f093
...@@ -2165,6 +2165,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event, ...@@ -2165,6 +2165,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
dev->name); dev->name);
break; break;
} }
if (idev)
idev->if_flags |= IF_READY;
} else { } else {
if (!netif_carrier_ok(dev)) { if (!netif_carrier_ok(dev)) {
/* device is still not ready. */ /* device is still not ready. */
......
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