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Date: Wed, 01 Oct 2014 23:30:32 +0200 From: Hannes Frederic Sowa <hannes@...essinduktion.org> To: Ulf Samuelsson <netdev@...gii.com>, Linux Netdev List <netdev@...r.kernel.org> Subject: Re: netlink NETLINK_ROUTE failure & Can the kernel really handle IPv6 properly Hello, On Wed, Oct 1, 2014, at 22:28, Ulf Samuelsson wrote: > BTW, the problem I am trying to solve is how to connect to an I/F with > an IPv6 link-local address. > > An existing kernel module waits for a NETDEV_UP event, and then tries to > communicate > with the link-local address. > > This will fail, because (according to a colleague) the I/F enters a > "tentative" state, > where it is trying to decide if it is unique or not. > It will remain in that state for 1-2 seconds, and only afterwards is the > link-local address > available for normal use. > > The guys writing the module, claim that the kernel is using NETDEV_UP. > There is very little code in the kernel using NETLINK_ROUTE, even in > latest stable. > It is using NETDEV_UP. > > If my colleague is right, the kernel really cannot handle IPv6 > link-local addresses properly. Sorry, I cannot really follow you, can you send example code or be a bit more precise? Thanks, Hannes -- 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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