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Date: Fri, 7 Sep 2007 12:11:38 +0200 From: Thomas Graf <tgraf@...g.ch> To: Milan Kocian <milon@...cz> Cc: David Miller <davem@...emloft.net>, netdev@...r.kernel.org Subject: Re: [PATCH 1/1] ipv6: corrects sended rtnetlink message * Milan Kocian <milon@...cz> 2007-09-06 23:05 > I agree but ipv6 sends on device change (NETDEV_DOWN) RTM_DELLINK message. > BTW when ipv6 send LINK message on NETDEV_UNREGISTER event, why doesn't > send message on NETDEV_REGISTER event? No symmetry ? You should be seeing two RTM_DELLINK upon NETDEV_UNREGISTER if the interface carried any IPv6 addresess. Once with ifi_change=~0 notifying you that the device is disappearing and once with ifi_change=0 coming from the IPv6 protocol shutdown. > ok. However, if I understand, LINK messages handle device changes not > protocol changes. Or not ? Yes, I personally think this behaviour is wrong but we can't remove it unless we are sure it doesn't break anything. > Now I ignore (RTM_DELLINK && ifi_family==AF_INET6) :-). But it's only workaround > till next change. That's also correct, pure netdevice notification will always be sent with the ifi_family set to AF_UNSPEC. > Hard to find it. I can try to look at other routing sw (probably most using it) > about handling with RTM_DELLINK. > Howerer when was made change from RTM_NEWLINK to RTM_DELLINK without protests, > we can try remove message :-) I'd give the USAGI software tree a short peek, if there was a specific reason for adding this notification in the first place, the software is most probably found in that tree. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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