From: Erik Nordmark
Date: Mon, 28 Nov 2016 15:27:05 -0800
> @@ -1995,8 +1995,11 @@ static struct rt6_info *ip6_route_info_c
> It is very good, but in some (rare!) circumstances
> (SIT, PtP, NBMA NOARP links) it is handy to allow
>
Made kernel accept IPv6 routes with IPv4-mapped address as next-hop.
It is possible to configure IP interfaces with IPv4-mapped addresses, and
one can add IPv6 routes for IPv4-mapped destinations/prefixes, yet prior
to this fix the kernel returned an EINVAL when attempting to add an IPv6
route wi