From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate001.proxmox.com (gate001.proxmox.com [IPv6:2a0f:8001:1:32::40]) by lore.proxmox.com (Postfix) with ESMTPS id 98FC11FF0E4 for ; Tue, 28 Jul 2026 15:24:18 +0200 (CEST) Received: from gate001.proxmox.com (localhost.localdomain [127.0.0.1]) by gate001.proxmox.com (Proxmox) with ESMTP id DA4B021320; Tue, 28 Jul 2026 15:24:16 +0200 (CEST) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 28 Jul 2026 15:24:12 +0200 Message-Id: To: "Gabriel Goller" , Subject: Re: [PATCH frr 1/2] frr: backport VXLAN local VTEP fallback fix From: "Lukas Sichert" References: <20260714111858.232230-1-g.goller@proxmox.com> In-Reply-To: <20260714111858.232230-1-g.goller@proxmox.com> X-Bm-Milter-Handled: 55990f41-d878-4baa-be0a-ee34c49e34d2 X-Bm-Transport-Timestamp: 1785245016258 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.068 Adjusted score from AWL reputation of From: address DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment (newer systems) RCVD_IN_DNSWL_LOW -0.7 Sender listed at https://www.dnswl.org/, low trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Message-ID-Hash: 4AAY4X5PKHLT4U3PCEO642BAJROAQZUM X-Message-ID-Hash: 4AAY4X5PKHLT4U3PCEO642BAJROAQZUM X-MailFrom: l.sichert@proxmox.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox VE development discussion List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On 2026-07-14 13:18, Gabriel Goller wrote: > Backport the upstream fix for EVPN VXLAN interfaces without an explicit > local IP address. Encode an unspecified VTEP as 0.0.0.0 so bgpd can fall > back to the BGP router ID. > > Also include the upstream regression topotest. > > For more information also check the pve patch (optional): > https://lore.proxmox.com/pve-devel/20260702143349.252142-1-g.goller@proxm= ox.com/ > > Fixes: #7766 > Upstream: https://github.com/FRRouting/frr/pull/22555 > Signed-off-by: Gabriel Goller Tested on a three-node EVPN/VXLAN setup. Without the patch, an address-less VXLAN interface caused bgpd to report: stream_get_ipaddr: unknown ip address-family: 0 and Number of L2 VNIs: 0 With the patch, bgpd correctly registered the L2 VNI. Bidirectional VXLAN traffic also worked with multiple local underlay addresses and route-selected source addresses. I have also tested this in combination with a pve-network patch, that addresses the issue by setting vxlan-local-tunnelip explicitly [1]. This also worked as expected [2]. Therefore consider this: Tested-by: Lukas Sichert [1] https://lore.proxmox.com/pve-devel/20260702143349.252142-1-g.goller@pro= xmox.com/ [2] https://lore.proxmox.com/pve-devel/DK3JYKQU39AH.34WYQGIZ0DIZR@proxmox.c= om/