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Date: Fri, 8 Jul 2016 14:55:07 -0500
From: Bruno Wolff III <bruno@wolff.to>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
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Subject: Re: [WireGuard] [ANNOUNCE] Snapshot `experimental-0.0.20160708.1`
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On Fri, Jul 08, 2016 at 20:49:07 +0200,
  "Jason A. Donenfeld" <Jason@zx2c4.com> wrote:
>On Fri, Jul 8, 2016 at 7:55 PM, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
>> But is it too fragile? Maybe we should scrap all of this and make
>> persistent keepalives authenticated. I'm not too thrilled about that
>> though...
>
>I'm experimenting with this in the authenticated-persistent-keepalive
>branch, if you'd like to try it out and report back on how it goes...

It looks like initially it does 0 length udp packets for keep alive and the 
authenticated keep alives don't seem to happen until after some data is sent.