linux-kernel - Re: [PATCH v4] net:bonding:Add support for IPV6 RLB to balance-alb mode

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Message-ID: <1f7b15a6-861f-9762-a159-73d16c95eebc@chinatelecom.cn>
Date:   Fri, 18 Mar 2022 17:49:02 +0800
From:   孙守鑫 <sunshouxin@...natelecom.cn>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     j.vosburgh@...il.com, vfalico@...il.com, andy@...yhouse.net,
        davem@...emloft.net, kuba@...nel.org, yoshfuji@...ux-ipv6.org,
        dsahern@...nel.org, oliver@...kum.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, huyd12@...natelecom.cn
Subject: Re: [PATCH v4] net:bonding:Add support for IPV6 RLB to balance-alb
 mode


在 2022/3/17 16:11, Jiri Pirko 写道:
> Thu, Mar 17, 2022 at 07:15:21AM CET, sunshouxin@...natelecom.cn wrote:
>> This patch is implementing IPV6 RLB for balance-alb mode.
>>
>> Suggested-by: Hu Yadi <huyd12@...natelecom.cn>
>> Signed-off-by: Sun Shouxin <sunshouxin@...natelecom.cn>
>
> Could you please reply to my question I asked for v1:
> Out of curiosity, what is exactly your usecase? I'm asking because
> I don't see any good reason to use RLB/ALB modes. I have to be missing
> something.
>
> This is adding a lot of code in bonding that needs to be maintained.
> However, if there is no particular need to add it, why would we?
>
> Could you please spell out why exactly do you need this? I'm pretty sure
> that in the end well find out, that you really don't need this at all.
>
> Thanks!


This patch is certainly aim fix one real issue in ou lab.
For historical inheritance, the bond6 with ipv4 is widely used in our lab.
We started to support ipv6 for all service last year, networking 
operation and maintenance team
think it does work with ipv6 ALB capacity take it for granted due to 
bond6's specification
but it doesn't work in the end. as you know, it is impossible to change 
link neworking to LACP
because of huge cost and effective to online server.