netdev - can not sync master interface when bond1 box connected with another bond1 box

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Message-ID: <CAAA3+BpkL6PKE6gc6c6LRiZe9vO1hXU5D5JLEZFzC5NKoRryvg@mail.gmail.com>
Date:   Mon, 8 Oct 2018 10:45:57 +0800
From:   Yi Li <lovelylich@...il.com>
To:     netdev@...r.kernel.org
Subject: can not sync master interface when bond1 box connected with another
 bond1 box

Hi guys,
          I encountered this problem when using bonding with mode1. I
have two linux box,
they both have two nics, and i setup these two nics with bond1 mode on
each linux box.
And then I connected these two linux box with each other.

          And then , I found , sometimes, Box A selects eth0 as
active,  eth1 as backup; and
at this moment, Box B auto selects eth1 as active, eth0 as backup.
        But my Box A's eth0 is connected with Box B's eth0, so they
are disconnected and can
not recovery from this situation, until i reboot or re-plug cables.

        So , guys, how can I make two linux boxes both with bonding
mode 1, connected with each
other steadily.
        Thanks.