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From:   Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date:   Wed, 3 Oct 2018 16:13:02 +0200
Message-ID: <CAKv+Gu9dOLbiBYKp9HG+GSPML0OJ-UuXnGsJO_re2S75ZF_qNA@mail.gmail.com>
Subject: Re: [PATCH net-next v6 23/23] net: WireGuard secure network tunnel
To:     "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Netdev <netdev@vger.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
        David Miller <davem@davemloft.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On 3 October 2018 at 16:12, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> Hi Ard,
>
> On Wed, Oct 3, 2018 at 1:15 PM Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>> > +config WIREGUARD
>> > +       tristate "WireGuard secure network tunnel"
>> > +       depends on NET && INET
>>
>> I think you need to add IPV6 here
>
> Nope. Like much of the net tree, WireGuard can function on ipv6-less
> kernels. If you do find something in WireGuard isn't working in a
> v6-less configuration, I consider that to be a bug that needs fixing.
>

OK. I hit a build error yesterday, and setting CONFIG_IPV6 fixed it.
Let me see if I can reproduce.