Hi there,
On linux-2.6.21-rc2 or later, IPv6 link-local address is not assigned to
some kind of interfaces during system start-up. (I found this issue
occures with e100, e1000 and tg3.)
This issue comes from the change that inet6_dev is allocated when
NETDEV_REGISTER event occurs. The allocation code is at ipv6_add_dev()
in net/ipv6/addrinfo.c. At the code, IF_READY bit would be set when the
link is ready. The link readyness is verified by netif_caeeir_ok().
However as the drivers don't call netif_carrier_off() prior to calling
register_netdev(), netif_caeeir_ok() returns true in spite of the
actual link state.
Here's a work around patch. This make IF_READY unset when NETDEV_UP
event occurs and the link is not ready. This patch may not be an
fundamental fix. But I don't have any other idea now.
Signed-off-by: Mitsuru Chinen <[EMAIL PROTECTED]>
---
net/ipv6/addrconf.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e16f1bb..1593cd1 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2196,6 +2196,7 @@ static int addrconf_notify(struct notifi
"ADDRCONF(NETDEV_UP): %s: "
"link is not ready\n",
dev->name);
+ idev->if_flags &= ~IF_READY;
break;
}
--
1.4.3.4
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