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From:   Sandy Harris <sandyinchina@gmail.com>
Date:   Fri, 3 Jul 2020 21:33:29 +0800
Message-ID: <CACXcFmkHJD+utZ8qKTrj7kwq6xY4M2tosFSdXX_L-2C-72OjaA@mail.gmail.com>
Subject: Re: No ESP response
To:     "Bhat, Jayalakshmi Manjunath" <jayalakshmi.bhat@hp.com>
Cc:     "linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>
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Bhat, Jayalakshmi Manjunath <jayalakshmi.bhat@hp.com> wrote:

> We are executing a simple ping test on our device in transport mode.

I wrote this 20 years ago. Does it help?
https://www.freeswan.org/freeswan_trees/freeswan-2.06/doc/faq.html#cantping