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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 19 Mar 2017 12:53:00 +0100
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Subject: Re: [Question] Is it posible layer 2 interface on wireguard
To: jens <jens@viisauksena.de>
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On Sun, Mar 19, 2017 at 12:47 PM, jens <jens@viisauksena.de> wrote:
> you need to establish connection, which means you may want to ping the
> inner wireguard ip in regular time intervalls

WireGuard has a "persistent-keepalive" feature for this. Check out the
manpage for wg(8).