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Date: Tue, 15 Aug 2023 14:53:07 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: Sriram Yagnaraman <sriram.yagnaraman@....tech>
Cc: netdev@...r.kernel.org
Subject: Re: [Question]: TCP resets when using ECMP for load-balancing
 between multiple servers.

On Tue, 15 Aug 2023 22:10:48 +0200
Sriram Yagnaraman <sriram.yagnaraman@....tech> wrote:

> diff --git a/include/uapi/linux/in_route.h b/include/uapi/linux/in_route.h
> index 0cc2c23b47f8..01ae06c7743b 100644
> --- a/include/uapi/linux/in_route.h
> +++ b/include/uapi/linux/in_route.h
> @@ -15,6 +15,7 @@
>  #define RTCF_REDIRECTED	0x00040000
>  #define RTCF_TPROXY	0x00080000 /* unused */
>  
> +#define RTCF_MULTIPATH	0x00200000
>  #define RTCF_FAST	0x00200000 /* unused */

This looks like a bad idea. Reusing bits that were unused
in the past and exposed through uapi will likely cause
an ABI breakage.

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