netdev - Re: ip route add give rtnetlink message after update from 4.9.6 to 4.9.8

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Message-ID: <9aae2c9f-1d1a-64d2-d541-71cfe6235433@cumulusnetworks.com>
Date:   Wed, 8 Feb 2017 10:14:36 -0700
From:   David Ahern <dsa@...ulusnetworks.com>
To:     David Miller <davem@...emloft.net>, pupilla@...ero.it
Cc:     netdev@...r.kernel.org
Subject: Re: ip route add give rtnetlink message after update from 4.9.6 to
 4.9.8

On 2/8/17 8:44 AM, David Miller wrote:
> From: "pupilla@...ero.it" <pupilla@...ero.it>
> Date: Wed, 8 Feb 2017 11:17:48 +0100 (CET)
> 
>> Hi Folks,
>>
>> After kernel update from 4.9.6 to 4.9.8, I get the below error
>> message when I run this command:
>>
>> root@...hoon:~# ip route add default table 210 nexthop dev eth0 via 10.68.64.1 
>> weight 1 nexthop dev eth0 via 10.68.64.2 weight 1
>> RTNETLINK answers: Operation not supported
>> root@...hoon:~# uname -a
>> Linux Typhoon 4.9.8 #1 SMP Tue Feb 7 17:14:54 CET 2017 x86_64 Intel(R) Core
>> (TM) i5-2520M CPU @ 2.50GHz GenuineIntel GNU/Linux
>>
>> Is this the expected behaviour?
> 
> David, maybe this was an unintended side effect of commit
> 9ed59592e3e379b2e9557dc1d9e9ec8fcbb33f16 ("lwtunnel: fix autoload of
> lwt modules").
> 

Missed the multihop case with LWTUNNEL disabled. patch coming.