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Date: Sun, 10 Aug 2014 22:37:12 +0200 From: Hannes Frederic Sowa <hannes@...hat.com> To: Roy Marples <roy@...ples.name> Cc: netdev@...r.kernel.org, "David S. Miller\" <davem@...emloft.net>, Alexey Kuznetsov " "<kuznet@....inr.ac.ru>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>, " Patrick McHardy <kaber@...sh.net> Subject: Re: [PATCH] ipv6: do not add link-local address if one already exists Hi, On So, 2014-08-10 at 19:56 +0000, Roy Marples wrote: > Currently the kernel will always add an IPv6 link-local address > based on the hardware address when the interface is brought up. > This is probably based on the assumption that userland would > never add one before the interface is brought up. > > However, one at least one userland application (dhcpcd) does this so > it can implement RFC7217 which can be used for link-local addresses > as well. > > Attached is a patch which checks to see if a link-local address exists > before indiscriminately adding one. Please have a look at: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=bc91b0f07ada5535427373a4e2050877bcc12218 This was recently implemented just for this specific case. Bye, 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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