Same here, 2 new debian 13 vm's installed, on both consoles the messages below:
systemd-ssh-generator[1416]: Failed to query local AF_VSOCK CID: Cannot assign requested address
The command 'lsmod | grep vsock' generates this output:
vsock_loopback 12288 0
vmw_vsock_virtio_transport_common 61440 1 vsock_loopback
vmw_vsock_vmci_transport 45056 0
vsock 61440 3 vmw_vsock_virtio_transport_common,vsock_loopback,vmw_vsock_vmci_transport
vmw_vmci 110592 1 vmw_vsock_vmci_transport
btw: Proxmox VE 9.2.20 and i've just updated it.