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Date: Tue, 02 Apr 2013 14:37:55 -0400 (EDT) From: David Miller <davem@...emloft.net> To: kumaran.4353@...il.com Cc: yoshfuji@...ux-ipv6.org, eric.dumazet@...il.com, kaber@...sh.net, kuznet@....inr.ac.ru, jmorris@...ei.org, Balakumaran.Kannan@...sony.com, maruthi.thotad@...sony.com, netdev@...r.kernel.org, jamshed.a@...sony.com, amit.agarwal@...sony.com, takuzo.ohara@...sony.com, aaditya.kumar@...sony.com Subject: Re: [PATCH v2] net IPv6 : Fix broken IPv6 routing table after loopback down-up From: Balakumaran Kannan <kumaran.4353@...il.com> Date: Tue, 02 Apr 2013 16:15:05 +0530 > IPv6 Routing table becomes broken once we do ifdown, ifup of the loopback(lo) > interface. After down-up, routes of other interface's IPv6 addresses through > 'lo' are lost. > > IPv6 addresses assigned to all interfaces are routed through 'lo' for internal > communication. Once 'lo' is down, those routing entries are removed from routing > table. But those removed entries are not being re-created properly when 'lo' is > brought up. So IPv6 addresses of other interfaces becomes unreachable from the > same machine. Also this breaks communication with other machines because of > NDISC packet processing failure. > > This patch fixes this issue by reading all interface's IPv6 addresses and adding > them to IPv6 routing table while bringing up 'lo'. > > Patch is prepared for Linux-3.9.rc5 kernel. > > Signed-off-by: Balakumaran Kannan <Balakumaran.Kannan@...sony.com> > Signed-off-by: Maruthi Thotad <Maruthi.Thotad@...sony.com> Applied, thanks. -- 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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