netdev - Re: [PATCH v2 net-next] net: display hw address of source machine during ipv6 DAD failure

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Message-Id: <20171101.205401.58455654476717666.davem@davemloft.net>
Date:   Wed, 01 Nov 2017 20:54:01 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     vpai@...mai.com
Cc:     yoshfuji@...ux-ipv6.org, kuznet@....inr.ac.ru, dsahern@...il.com,
        netdev@...r.kernel.org, ilubashe@...mai.com, pai.vishwain@...il.com
Subject: Re: [PATCH v2 net-next] net: display hw address of source machine
 during ipv6 DAD failure

From: Vishwanath Pai <vpai@...mai.com>
Date: Mon, 30 Oct 2017 19:38:52 -0400

> This patch updates the error messages displayed in kernel log to include
> hwaddress of the source machine that caused ipv6 duplicate address
> detection failures.
> 
> Examples:
> 
> a) When we receive a NA packet from another machine advertising our
> address:
> 
> ICMPv6: NA: 34:ab:cd:56:11:e8 advertised our address 2001:db8:: on eth0!
> 
> b) When we detect DAD failure during address assignment to an interface:
> 
> IPv6: eth0: IPv6 duplicate address 2001:db8:: used by 34:ab:cd:56:11:e8
> detected!
> 
> v2:
>     Changed %pI6 to %pI6c in ndisc_recv_na()
>     Chaged the v6 address in the commit message to 2001:db8::
> 
> Suggested-by: Igor Lubashev <ilubashe@...mai.com>
> Signed-off-by: Vishwanath Pai <vpai@...mai.com>

Applied, thank you.