From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Ahern <dsahern@gmail.com>
Subject: Re: iproute2 - modifying routes in place
Date: Sat, 12 May 2018 10:00:46 -0700
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To: Ryan Whelan <rcwhelan@gmail.com>, netdev@vger.kernel.org
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On 5/11/18 4:42 AM, Ryan Whelan wrote:
> `ip route` has 2 subcommands that don't seem to work as expected and i'm
> not sure if its a bug, or if i'm misunderstanding the semantics.

Can you try with ipv6/route-bugs branch in
https://github.com/dsahern/linux