[pve-devel] superseded: [PATCH pve-network v2] sdn: evpn: fix IPv6 exitnode local routing

[Hannes Laimer]

superseded-by: 
https://lore.proxmox.com/pve-devel/20260119142639.39184-1-h.laimer@proxmox.com/T/#u

On 1/19/26 12:05, Hannes Laimer wrote:
> IPv6 subnets on exitnodes had no working local-routing path. Add a v6
> address on the xvrf veth pair and install IPv6 routes via that next-hop.
> 
> Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
> ---
> v2:
>   - change `address6` to `address`, ifreload2 does not pick up address6.
>     Probably had the address still attached from manualy testing so I
>     didn't notice when I tested this for v1
> 
>   src/PVE/Network/SDN/Controllers/EvpnPlugin.pm | 7 ++++++-
>   src/PVE/Network/SDN/Zones/EvpnPlugin.pm       | 2 ++
>   2 files changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm b/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
> index e53000a..74fc35d 100644
> --- a/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
> +++ b/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
> @@ -462,7 +462,12 @@ sub generate_vnet_frr_config {
>       foreach my $subnetid (sort keys %{$subnets}) {
>           my $subnet = $subnets->{$subnetid};
>           my $cidr = $subnet->{cidr};
> -        push @controller_config, "ip route $cidr 10.255.255.2 xvrf_$zoneid";
> +        my ($ip) = split(/\//, $cidr, 2);
> +        if (Net::IP::ip_is_ipv6($ip)) {
> +            push @controller_config, "ipv6 route $cidr fd00:ffff::2 xvrf_$zoneid";
> +        } else {
> +            push @controller_config, "ip route $cidr 10.255.255.2 xvrf_$zoneid";
> +        }
>       }
>       push(@{ $config->{frr_ip_protocol} }, @controller_config);
>   }
> diff --git a/src/PVE/Network/SDN/Zones/EvpnPlugin.pm b/src/PVE/Network/SDN/Zones/EvpnPlugin.pm
> index 6d89499..18aecb9 100644
> --- a/src/PVE/Network/SDN/Zones/EvpnPlugin.pm
> +++ b/src/PVE/Network/SDN/Zones/EvpnPlugin.pm
> @@ -327,6 +327,7 @@ sub generate_sdn_config {
>               @iface_config = ();
>               push @iface_config, "link-type veth";
>               push @iface_config, "address 10.255.255.1/30";
> +            push @iface_config, "address fd00:ffff::1/126" if $ipv6;
>               push @iface_config, "veth-peer-name $iface_xvrfp";
>               push @iface_config, "mtu " . ($mtu + 50) if $mtu;
>               push(@{ $config->{$iface_xvrf} }, @iface_config) if !$config->{$iface_xvrf};
> @@ -334,6 +335,7 @@ sub generate_sdn_config {
>               @iface_config = ();
>               push @iface_config, "link-type veth";
>               push @iface_config, "address 10.255.255.2/30";
> +            push @iface_config, "address fd00:ffff::2/126" if $ipv6;
>               push @iface_config, "veth-peer-name $iface_xvrf";
>               push @iface_config, "vrf $vrf_iface";
>               push @iface_config, "mtu " . ($mtu + 50) if $mtu;