netdev - Why ebt_dnat.c doesn't need to re-search fdb after changing dmac?

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Message-ID: <CAAA3+Bp9w+BS3Jb=SXh2y-jd7C4RD8dOQ5SPYEVRBN2zKTcnhQ@mail.gmail.com>
Date:   Mon, 14 May 2018 10:51:08 +0800
From:   Yi Li <lovelylich@...il.com>
To:     netdev@...r.kernel.org
Subject: Why ebt_dnat.c doesn't need to re-search fdb after changing dmac?

Hi List,
         As the subject stated, I didn't find the clue. If we add dnat
into NF_BR_LOCAL_OUT, and change the destination mac of our locally
generated packets. In theory , we need to re-search the fdb hash with
new dmac as parameter,  in order to get the right bridge port to send
packets out.
        But I can't find the re-search action, or did I missed something ?

regards,
Yi