netdev - Re: gateway field missing in netlink message

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Message-ID: <20220504223100.GA2968@u2004-local>
Date:   Wed, 4 May 2022 15:31:00 -0700
From:   David Ahern <dsahern@...nel.org>
To:     Magesh M P <magesh@...itizethings.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: gateway field missing in netlink message

On Wed, May 04, 2022 at 06:46:05AM +0000, Magesh  M P wrote:
> Hi
> 
> I am trying to configure dual gateways with ip route command.
> 
> Ip route show command shows the dual gateway information.
> 
> I got a vpp stack that is running. The communication of route entries between Linux kernel and vpp stack is through netlink messages.
> 
> On parsing the netlink message for the route entry with dual gateways, we see that the message carries only single gateway. Is this a known bug ? Please suggest a solution to resolve this.
> 

If `ip route show` lists a multipath route, the bug is in your app. Are
you handling RTA_MULTIPATH attribute?