netdev - Re: [PATCH v2 net-next] mlxsw: spectrum_router: Prevent ipv6 gateway with v4 route via replace and append

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Message-Id: <20190423.195445.37329366818419219.davem@davemloft.net>
Date:   Tue, 23 Apr 2019 19:54:45 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     dsahern@...nel.org
Cc:     netdev@...r.kernel.org, idosch@...lanox.com, dsahern@...il.com
Subject: Re: [PATCH v2 net-next] mlxsw: spectrum_router: Prevent ipv6
 gateway with v4 route via replace and append

From: David Ahern <dsahern@...nel.org>
Date: Tue, 23 Apr 2019 16:03:29 -0700

> From: David Ahern <dsahern@...il.com>
> 
> mlxsw currently does not support v6 gateways with v4 routes. Commit
> 19a9d136f198 ("ipv4: Flag fib_info with a fib_nh using IPv6 gateway")
> prevents a route from being added, but nothing stops the replace or
> append. Add a catch for them too.
>     $ ip  ro add 172.16.2.0/24 via 10.99.1.2
>     $ ip  ro replace 172.16.2.0/24 via inet6 fe80::202:ff:fe00:b dev swp1s0
>     Error: mlxsw_spectrum: IPv6 gateway with IPv4 route is not supported.
>     $ ip  ro append 172.16.2.0/24 via inet6 fe80::202:ff:fe00:b dev swp1s0
>     Error: mlxsw_spectrum: IPv6 gateway with IPv4 route is not supported.
> 
> Signed-off-by: David Ahern <dsahern@...il.com>
> ---
> v2
> - added catch for append and moved up location to ADD case

Applied, thanks David.