From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Baptiste Jonglez <baptiste@bitsofnetworks.org>
Cc: WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: openwrt route_allowed_ips is inprecise
Date: Tue, 20 Dec 2016 04:14:06 +0100 [thread overview]
Message-ID: <CAHmME9rDK0MEFH2oOVjeTF0n=J6=Hsk9e5Hyj2GDnFk8V3LtwA@mail.gmail.com> (raw)
In-Reply-To: <20161220011334.GB16814@tuxmachine.polynome.dn42>
Hey Baptiste,
On Tue, Dec 20, 2016 at 2:13 AM, Baptiste Jonglez
<baptiste@bitsofnetworks.org> wrote:
> By the way, besides the issue of magic, this approach seems incorrect
> depending on the order of the routes. Consider the case where cmd_add()
> handles the following sequence of allowed-ips:
>
> 10.0.0.0/8 dev wg0
> 10.4.7.0/24 dev wg0
> 10.4.0.0/16 dev wg1
>
> Your method would incorrectly drop the second route, and then the third
> route would take over traffic for this /24 through the wrong interface.
Very smart point and astute observation! This should be fixed here:
https://git.zx2c4.com/WireGuard/commit/?id=5838c950859f1b55ad344e81b77a0b71917ffd61
Unless there are objections, that will ship with the next snapshot.
Jason
next prev parent reply other threads:[~2016-12-20 3:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-18 20:14 Jason A. Donenfeld
2016-12-19 8:00 ` Jörg Thalheim
2016-12-19 12:32 ` Jason A. Donenfeld
2016-12-19 13:06 ` Baptiste Jonglez
2016-12-19 13:09 ` Jason A. Donenfeld
2016-12-19 13:19 ` Baptiste Jonglez
2016-12-19 13:21 ` Jason A. Donenfeld
2016-12-20 1:13 ` Baptiste Jonglez
2016-12-20 3:14 ` Jason A. Donenfeld [this message]
2016-12-20 3:38 ` Dan Luedtke
2016-12-20 4:33 ` Jason A. Donenfeld
2016-12-20 8:52 ` Dan Lüdtke
2016-12-20 10:15 ` Dan Lüdtke
2016-12-20 13:33 ` Jason A. Donenfeld
2016-12-20 14:51 ` Dan Lüdtke
2016-12-20 18:27 ` Jason A. Donenfeld
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