From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate001.proxmox.com (gate001.proxmox.com [45.144.208.40]) by lore.proxmox.com (Postfix) with ESMTPS id B577F1FF0C0 for ; Wed, 04 Nov 2026 15:55:33 +0100 (CET) Received: from gate001.proxmox.com (localhost.localdomain [127.0.0.1]) by gate001.proxmox.com (Proxmox) with ESMTP id D590F215C2; Wed, 04 Nov 2026 15:55:24 +0100 (CET) From: Lukas Sichert To: pve-devel@lists.proxmox.com Subject: [PATCH network v5 03/10] sdn: evpn: enable force_forwarding for ipv6 forwarding to subnets Date: Wed, 4 Nov 2026 15:55:04 +0100 Message-ID: <20261104145513.21471-4-l.sichert@proxmox.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261104145513.21471-1-l.sichert@proxmox.com> References: <20261104145513.21471-1-l.sichert@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Bm-Milter-Handled: 55990f41-d878-4baa-be0a-ee34c49e34d2 X-Bm-Transport-Timestamp: 1793804121227 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.532 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_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_PASS -0.001 SPF: sender matches SPF record Message-ID-Hash: I7PEGV5B7443AZ6VPP3TXVMJJRIL4UX7 X-Message-ID-Hash: I7PEGV5B7443AZ6VPP3TXVMJJRIL4UX7 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 CC: Lukas Sichert X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox VE development discussion List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: EVPN zones can route IPv6 subnet traffic through a VNet, an outgoing interface and a VRF bridge. Until now, this depended on global IPv6 forwarding state, which also changes Router Advertisement handling for the whole host. Enable 'force_forwarding' explicitly on the Subnet and VRF bridge using the 'ip6-force-forward' ifupdown2 flag. Signed-off-by: Lukas Sichert --- src/PVE/Network/SDN/Zones/EvpnPlugin.pm | 8 +++++++- .../exitnode_local_routing_ipv6/expected_sdn_interfaces | 2 ++ src/test/zones/evpn/exitnode_snat/expected_sdn_interfaces | 2 ++ .../zones/evpn/exitnodenullroute/expected_sdn_interfaces | 2 ++ src/test/zones/evpn/ipv4ipv6/expected_sdn_interfaces | 2 ++ src/test/zones/evpn/ipv6/expected_sdn_interfaces | 2 ++ src/test/zones/evpn/ipv6underlay/expected_sdn_interfaces | 2 ++ 7 files changed, 19 insertions(+), 1 deletion(-) diff --git a/src/PVE/Network/SDN/Zones/EvpnPlugin.pm b/src/PVE/Network/SDN/Zones/EvpnPlugin.pm index 8a45c51..1bec8c2 100644 --- a/src/PVE/Network/SDN/Zones/EvpnPlugin.pm +++ b/src/PVE/Network/SDN/Zones/EvpnPlugin.pm @@ -308,7 +308,12 @@ sub generate_sdn_config { push @iface_config, "mtu $mtu" if $mtu; push @iface_config, "alias $alias" if $alias; push @iface_config, "ip-forward on" if $enable_forward_v4; - push @iface_config, "ip6-forward on" if $enable_forward_v6; + + if ($enable_forward_v6) { + push @iface_config, "ip6-forward on"; + push @iface_config, "ip6-force-forward on"; + } + push @iface_config, "arp-accept on" if $ipv4 || $ipv6; push @iface_config, "vrf $vrf_iface" if $vrf_iface; push(@{ $config->{$vnetid} }, @iface_config) if !$config->{$vnetid}; @@ -354,6 +359,7 @@ sub generate_sdn_config { push @forward_opts, 'ip-forward on' if $enable_forward_v4; if ($enable_forward_v6) { push @forward_opts, 'ip6-forward on'; + push @forward_opts, 'ip6-force-forward on'; } for my $opt (@forward_opts) { my $opt_absent = !grep { $_ eq $opt } @{ $config->{$brvrf} }; diff --git a/src/test/zones/evpn/exitnode_local_routing_ipv6/expected_sdn_interfaces b/src/test/zones/evpn/exitnode_local_routing_ipv6/expected_sdn_interfaces index 02b52c1..97e0e06 100644 --- a/src/test/zones/evpn/exitnode_local_routing_ipv6/expected_sdn_interfaces +++ b/src/test/zones/evpn/exitnode_local_routing_ipv6/expected_sdn_interfaces @@ -8,6 +8,7 @@ iface myvnet bridge_fd 0 mtu 1450 ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -24,6 +25,7 @@ iface vrfbr_myzone mtu 1450 vrf vrf_myzone ip6-forward on + ip6-force-forward on auto vrfvx_myzone iface vrfvx_myzone diff --git a/src/test/zones/evpn/exitnode_snat/expected_sdn_interfaces b/src/test/zones/evpn/exitnode_snat/expected_sdn_interfaces index 522a54e..ce7f86f 100644 --- a/src/test/zones/evpn/exitnode_snat/expected_sdn_interfaces +++ b/src/test/zones/evpn/exitnode_snat/expected_sdn_interfaces @@ -27,6 +27,7 @@ iface myvnet2 bridge_fd 0 mtu 1450 ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -44,6 +45,7 @@ iface vrfbr_myzone vrf vrf_myzone ip-forward on ip6-forward on + ip6-force-forward on auto vrfvx_myzone iface vrfvx_myzone diff --git a/src/test/zones/evpn/exitnodenullroute/expected_sdn_interfaces b/src/test/zones/evpn/exitnodenullroute/expected_sdn_interfaces index 6878397..88bb214 100644 --- a/src/test/zones/evpn/exitnodenullroute/expected_sdn_interfaces +++ b/src/test/zones/evpn/exitnodenullroute/expected_sdn_interfaces @@ -14,6 +14,7 @@ iface myvnet mtu 1450 ip-forward on ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -49,6 +50,7 @@ iface vrfbr_myzone vrf vrf_myzone ip-forward on ip6-forward on + ip6-force-forward on auto vrfbr_myzone2 iface vrfbr_myzone2 diff --git a/src/test/zones/evpn/ipv4ipv6/expected_sdn_interfaces b/src/test/zones/evpn/ipv4ipv6/expected_sdn_interfaces index 0bde7a1..45d8e63 100644 --- a/src/test/zones/evpn/ipv4ipv6/expected_sdn_interfaces +++ b/src/test/zones/evpn/ipv4ipv6/expected_sdn_interfaces @@ -11,6 +11,7 @@ iface myvnet mtu 1450 ip-forward on ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -28,6 +29,7 @@ iface vrfbr_myzone vrf vrf_myzone ip-forward on ip6-forward on + ip6-force-forward on auto vrfvx_myzone iface vrfvx_myzone diff --git a/src/test/zones/evpn/ipv6/expected_sdn_interfaces b/src/test/zones/evpn/ipv6/expected_sdn_interfaces index 98793a1..882dd72 100644 --- a/src/test/zones/evpn/ipv6/expected_sdn_interfaces +++ b/src/test/zones/evpn/ipv6/expected_sdn_interfaces @@ -9,6 +9,7 @@ iface myvnet bridge_fd 0 mtu 1450 ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -25,6 +26,7 @@ iface vrfbr_myzone mtu 1450 vrf vrf_myzone ip6-forward on + ip6-force-forward on auto vrfvx_myzone iface vrfvx_myzone diff --git a/src/test/zones/evpn/ipv6underlay/expected_sdn_interfaces b/src/test/zones/evpn/ipv6underlay/expected_sdn_interfaces index 62f05df..98cd43f 100644 --- a/src/test/zones/evpn/ipv6underlay/expected_sdn_interfaces +++ b/src/test/zones/evpn/ipv6underlay/expected_sdn_interfaces @@ -9,6 +9,7 @@ iface myvnet bridge_fd 0 mtu 1450 ip6-forward on + ip6-force-forward on arp-accept on vrf vrf_myzone @@ -25,6 +26,7 @@ iface vrfbr_myzone mtu 1450 vrf vrf_myzone ip6-forward on + ip6-force-forward on auto vrfvx_myzone iface vrfvx_myzone -- 2.47.3