From owner-freebsd-net@FreeBSD.ORG Fri Apr 17 03:02:34 2015 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3B633711 for ; Fri, 17 Apr 2015 03:02:34 +0000 (UTC) Received: from mail-vn0-x22f.google.com (mail-vn0-x22f.google.com [IPv6:2607:f8b0:400c:c0f::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F08976A39B for ; Fri, 17 Apr 2015 03:02:33 +0000 (UTC) Received: by vnbf62 with SMTP id f62so25214219vnb.13 for ; Thu, 16 Apr 2015 20:02:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=clintarmstrong.net; s=google; h=mime-version:from:date:message-id:subject:to:content-type; bh=zaNplMTT4843pH1YxHaxrBEh6YD8oXoEMex7Qq2Pfs0=; b=ffOSIqJynNC8V0lmyqblzzSJk1WgSzX3BUT3IdFuMwFG+6NZVohxM3W4dIFHI9oGj6 6R97jHKqLxZi2bjqBJ/MT0FesvmU+wneb1xfr93AsMQZPN8ETeh31/QuxEt93BuYW7bL pW4VNruxSyHHqPBekZ2SKiuk9cXd9emV7yAso= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-type; bh=zaNplMTT4843pH1YxHaxrBEh6YD8oXoEMex7Qq2Pfs0=; b=I+6SzpxkESo45yheN+Af/AogaE/0r9OioUTkDOUrG2JlV4dwqTJLcmmkvZY9BEk0S+ fG45rwVASwqRez/3IQKWAdLeKtUPt66BCK8kR1nBq+ocsgIFWBfaGcjx5a9I9klnbzca JeDJ3LSPQnyd9DfQySU3cjue1nQFxBLxIjaig7da8GkQ+wa897nb9IPkfw87TJZTN+/N q9bzVyZfS5MTiudNkqzKW7tR/ZYTg/HntvJqe7/d0TcifVDDVilOW/1+IVeGMTsCuttV bJFdnv0pGEKUWYr77OkZApfJneTgjFxNmzVzftEpBenZlrf8apOYA4+DguuT6H+qwOi5 QKxw== X-Gm-Message-State: ALoCoQnle9yB5x85rWJZxs8O3jY/h4w13Fdrf7NLOuzIM4sQrhIdMl0NnM6/U7HJhT9gYQyA/J0c X-Received: by 10.52.113.97 with SMTP id ix1mr890681vdb.1.1429239752801; Thu, 16 Apr 2015 20:02:32 -0700 (PDT) MIME-Version: 1.0 From: Clint Armstrong Date: Fri, 17 Apr 2015 03:02:32 +0000 Message-ID: Subject: Multipoint GRE To: "freebsd-net@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Apr 2015 03:02:34 -0000 Is it possible to create a point to multipoint GRE network on FreeBSD? On Linux I would do this by creating the GRE interface without a defined tunnel endpoint. Then by adding psudo-arp entries which map addresses on the GRE subnet with a tunnel endpoint address I can have multiple GRE tunnel destinations. Based on my testing so far, it looks like GRE on FreeBSD requires a single tunnel endpoint address. Is there any way around this?