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Subject: Re: [PATCH] net: compute a more reasonable default ip6_rt_max_size
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Arun Sharma <asharma@fb.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        David Miller <davem@davemloft.net>
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Date: Fri, 25 May 2012 22:47:00 +0200
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On Fri, 2012-05-25 at 13:15 -0700, Arun Sharma wrote:
> The algorithm is based on ipv4 and alloc_large_system_hash().
> 

Why is it needed at all ?

IPv4 has a route cache with potentially millions of entries, not IPv6.