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Date:   Wed, 1 Mar 2017 16:07:38 -0800
From:   David Ahern <dsa@...ulusnetworks.com>
To:     Martin KaFai Lau <kafai@...com>,
        Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, andreyknvl@...gle.com,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [Patch net v3] ipv6: check for ip6_null_entry in
 __ip6_del_rt_siblings()

On 3/1/17 3:16 PM, Martin KaFai Lau wrote:
> [ An unrelated topic.  I wonder ip -6 r del xyz::/0 would delete
>   the gateway route...]

a very related question ...

ip -6 r del x::/0 comes down to the kernel as delete '::/0' (plen is 0,
so cfg->fc_dst is 0). It ends up on the null_entry from fib6_locate b/c
of the 0 prefix length, so it is another variant of 'ip -6 ro del ::/0'

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