netdev - Re: [PATCH net-next] net: ipv6: Add sysctl for minimum prefix len acceptable in RIOs.

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Message-Id: <20170322.142106.1607838051053330169.davem@davemloft.net>
Date:   Wed, 22 Mar 2017 14:21:06 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     jscherpelz@...gle.com
Cc:     netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org, ek@...gle.com,
        lorenzo@...gle.com
Subject: Re: [PATCH net-next] net: ipv6: Add sysctl for minimum prefix len
 acceptable in RIOs.

From: Joel Scherpelz <jscherpelz@...gle.com>
Date: Wed, 22 Mar 2017 18:19:04 +0900

> This commit adds a new sysctl accept_ra_rt_info_min_plen that
> defines the minimum acceptable prefix length of Route Information
> Options. The new sysctl is intended to be used together with
> accept_ra_rt_info_max_plen to configure a range of acceptable
> prefix lengths. It is useful to prevent misconfigurations from
> unintentionally blackholing too much of the IPv6 address space
> (e.g., home routers announcing RIOs for fc00::/7, which is
> incorrect).
> 
> Signed-off-by: Joel Scherpelz <jscherpelz@...gle.com>

Applied, thank you.