netdev - Re: [PATCH 1/1] neighbour: Support broadcast ARP in neighbor PROPE state

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Date:	Fri, 6 Feb 2015 22:46:04 -0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	zhuyj <zyjzyj2000@...il.com>
Cc:	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	stefan.costandache@...driver.com, alexandre.dietsch@...driver.com,
	yue.tao@...driver.com, clinton.slabbert@...driver.com,
	eulfsam <ulf.samuelsson@...csson.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 1/1] neighbour: Support broadcast ARP in neighbor PROPE state

On Wed, Feb 4, 2015 at 11:20 PM, zhuyj <zyjzyj2000@...il.com> wrote:
> diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
> index bd29016..4d13edb 100644
> --- a/net/ipv4/Kconfig
> +++ b/net/ipv4/Kconfig
> @@ -259,6 +259,23 @@ config IP_PIMSM_V2
>           gated-5). This routing protocol is not used widely, so say N unless
>           you want to play with it.
>
> +config ARP_PROBE_BCAST
> +       bool "IP: ARP send broadcast ARP, if probing using unicast fails"
> +       default y

Why make it default to y? Since we use the current behavior for a long time?
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