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Date:   Wed, 9 Sep 2020 16:39:51 +0200
From:   Matthieu Baerts <>
To:     Geliang Tang <>,
        Mat Martineau <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Florian Westphal <>,
        Peter Krystad <>
Subject: Re: [MPTCP][PATCH v2 net 1/2] mptcp: fix subflow's local_id issues

Hi Geliang,

On 08/09/2020 04:49, Geliang Tang wrote:
> In mptcp_pm_nl_get_local_id, skc_local is the same as msk_local, so it
> always return 0. Thus every subflow's local_id is 0. It's incorrect.
> This patch fixed this issue.
> Also, we need to ignore the zero address here, like in IPv4. When
> we use the zero address as a local address, it means that we can use any
> one of the local addresses. The zero address is not a new address, we don't
> need to add it to PM, so this patch added a new function address_zero to
> check whether an address is the zero address, if it is, we ignore this
> address.
> Fixes: 01cacb00b35cb ("mptcp: add netlink-based PM")
> Signed-off-by: Geliang Tang <>

Thank you for the v2!

Reviewed-by: Matthieu Baerts <>

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