PVE 8 upgrade issue - systemd-networkd-wait-online.service. using enterprise repo

Jun 12, 2020

we have currently started to upgrade our PVE7 Cluster to PVE8 but after the upgrading the System we have discovered a problem with the networkintefaces.
We are using proxmox enterprise Repository.

[FAILED] Failed to start systemd-networkd-wait-online.service - Wait for Network to be Configured.
The "systemd-networkd-wait-online.service" stucks on boot.

The systsme itself does only boot with an empty /etc/network/interfaces file (lo only).
After the reboot we can uncomment the interfaces and restart networking services without any problems.

Current Network Setup (worked fine on PVE7)

auto lo
iface lo inet loopback

auto eno1
iface eno1 inet manual

auto eno2
iface eno2 inet manual

auto eno34
iface eno34 inet manual

auto eno33
iface eno33 inet static

auto bond0
iface bond0 inet manual
        bond-slaves eno33 eno34
        bond-miimon 100
        bond-mode 802.3ad
        network IP
        dns-nameservers IP
        dns-search DNS

auto bond1
iface bond1 inet static
        address IP/24
        bond-slaves eno1 eno2
        bond-miimon 100
        bond-mode active-backup
        bond-primary eno1
        network IP
        bond-downdelay 200
        bond-updelay 200

iface vmbr0 inet manual
        bridge-ports bond0
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094

auto vmbr0.3022
iface vmbr0.3022 inet static
        address IP/24
        gateway GW-IP

Do you have any suggestion, as I said, the problem only appeared after the Debian 12/PVE8 upgrade.
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