netdev - Re: [PATCH net-next v2 4/4] openvswitch: IPv6 support for ovs_tunnel_get_egress

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Message-ID: <CAEP_g=9WbT15vWUpUemq5c_b90U7LfbVRWDt0DSHGoqnqyZL+A@mail.gmail.com>
Date:	Fri, 2 Oct 2015 17:57:06 -0700
From:	Jesse Gross <jesse@...ira.com>
To:	Pravin Shelar <pshelar@...ira.com>
Cc:	Jiri Benc <jbenc@...hat.com>, netdev <netdev@...r.kernel.org>,
	"dev@...nvswitch.org" <dev@...nvswitch.org>
Subject: Re: [PATCH net-next v2 4/4] openvswitch: IPv6 support for ovs_tunnel_get_egress_info

On Fri, Oct 2, 2015 at 12:32 PM, Pravin Shelar <pshelar@...ira.com> wrote:
> On Thu, Oct 1, 2015 at 11:00 PM, Jiri Benc <jbenc@...hat.com> wrote:
>> On Thu, 1 Oct 2015 17:11:56 -0700, Pravin Shelar wrote:
>>> I dont see point of adding this code when IPv6 sampling not support by
>>> the patch series.
>>
>> It was requested by Jesse:
>> http://article.gmane.org/gmane.linux.network/380348
>>
>
> I don't think we can use this function, lwtunnel device need new ndo_
> operation to export this information. So lets defer this patch till we
> have solution for retrieving egress info from lwtunnel devices.

I don't entirely disagree with this but I'm also nervous about
completely leaving it out. It seems like when this issue does get
fixed, it is likely that the person who does it will just convert
whatever code is there and not necessarily think about IPv6 since it's
not an IPv6 feature. If that happens, we'll have a hidden problem in
IPv6, which is somewhat unfortunately as try to advance IPv6 forward.
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