From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 915B66C559 for ; Mon, 29 Mar 2021 14:07:20 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 8DA3D14E16 for ; Mon, 29 Mar 2021 14:07:20 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 0823814E05 for ; Mon, 29 Mar 2021 14:07:20 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id C47904594F for ; Mon, 29 Mar 2021 14:07:19 +0200 (CEST) From: Mira Limbeck To: pve-devel@lists.proxmox.com Date: Mon, 29 Mar 2021 14:07:15 +0200 Message-Id: <20210329120716.9792-2-m.limbeck@proxmox.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210329120716.9792-1-m.limbeck@proxmox.com> References: <20210329120716.9792-1-m.limbeck@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.229 Adjusted score from AWL reputation of From: address KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment KAM_LAZY_DOMAIN_SECURITY 1 Sending domain does not have any anti-forgery methods NO_DNS_FOR_FROM 0.379 Envelope sender has no MX or A DNS records RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_NONE 0.001 SPF: sender does not publish an SPF Record Subject: [pve-devel] [PATCH qemu-server 2/2] fix #2670: cloudinit enable SLAAC X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Mar 2021 12:07:20 -0000 cloud-init's SLAAC option was disabled in 2018 because there was no support for it. Now that cloud-init 19.4 or newer versions are more widespread, we can finally reenable it. Also include minimum required cloud-init version for SLAAC support in format description. Tested on Ubuntu 20.04 (ci 20.4), CentOS 8 (ci 19.4), Debian 10 (ci 20.2). Signed-off-by: Mira Limbeck --- PVE/QemuServer.pm | 3 ++- PVE/QemuServer/Cloudinit.pm | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm index 1c0b5c2..7dd4bcf 100644 --- a/PVE/QemuServer.pm +++ b/PVE/QemuServer.pm @@ -964,7 +964,8 @@ IP addresses use CIDR notation, gateways are optional but need an IP of the same The special string 'dhcp' can be used for IP addresses to use DHCP, in which case no explicit gateway should be provided. -For IPv6 the special string 'auto' can be used to use stateless autoconfiguration. +For IPv6 the special string 'auto' can be used to use stateless autoconfiguration. This requires +cloud-init 19.4 or newer. If cloud-init is enabled and neither an IPv4 nor an IPv6 address is specified, it defaults to using dhcp on IPv4. diff --git a/PVE/QemuServer/Cloudinit.pm b/PVE/QemuServer/Cloudinit.pm index 3224dd0..a5474d3 100644 --- a/PVE/QemuServer/Cloudinit.pm +++ b/PVE/QemuServer/Cloudinit.pm @@ -449,8 +449,8 @@ sub nocloud_network { if ($ip eq 'dhcp') { $content .= "${i}- type: dhcp6\n"; } elsif ($ip eq 'auto') { - # SLAAC is not supported by cloud-init, this fallback should work with an up-to-date netplan at least - $content .= "${i}- type: dhcp6\n"; + # SLAAC is only supported by cloud-init since 19.4 + $content .= "${i}- type: ipv6_slaac\n"; } else { $content .= "${i}- type: static6\n" . "${i} address: '$ip'\n"; -- 2.20.1