Hi.
Avaid provided test application, so bug got fixed.
IPv6 addrconf removes ipv6 inner device from netdev each time cmu
changes and new value is less than IPV6_MIN_MTU (1280 bytes).
When mtu is changed and new value is greater than IPV6_MIN_MTU,
it does not add ipv6 addresses and inner device bac.
This patch fixes that.
Tested with Avaid's application, which works ok now.
Signed-off-by: Evgeniy Polyakov <[EMAIL PROTECTED]>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 567664e..4f7e46c 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2357,12 +2358,18 @@ static int addrconf_notify(struct notifier_block *this,
unsigned long event,
break;
case NETDEV_CHANGEMTU:
- if ( idev && dev->mtu >= IPV6_MIN_MTU) {
+ if (idev && dev->mtu >= IPV6_MIN_MTU) {
rt6_mtu_change(dev, dev->mtu);
idev->cnf.mtu6 = dev->mtu;
break;
}
+ if (!idev && dev->mtu >= IPV6_MIN_MTU) {
+ idev = ipv6_add_dev(dev);
+ if (idev)
+ break;
+ }
+
/* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface.
*/
case NETDEV_DOWN:
--
Evgeniy Polyakov
-
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