linux-kernel - Re: [PATCH v2] Generate netlink notification when default IPv6 route preference changes

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Date:   Sat, 12 Feb 2022 12:32:05 -0700
From:   David Ahern <dsahern@...il.com>
To:     Kalash Nainwal <kalash@...sta.com>, netdev@...r.kernel.org
Cc:     fruggeri@...sta.com, "David S. Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Generate netlink notification when default IPv6 route
 preference changes

On 2/10/22 2:09 PM, Kalash Nainwal wrote:
>  Generate RTM_NEWROUTE netlink notification when the route preference
>  changes on an existing kernel generated default route in response to
>  RA messages. Currently netlink notifications are generated only when
>  this route is added or deleted but not when the route preference
>  changes, which can cause userspace routing application state to go
>  out of sync with kernel.
> 
> Signed-off-by: Kalash Nainwal <kalash@...sta.com>
> ---
>  net/ipv6/ndisc.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>