How to configure Proxmox VE2 bridge on Hetzner with VLAN and defs?

Question

linux

Please tell me how to configure VLAN for 5 Proxmox KVM machines with an vmbr0outward bridge for vm0
(EX4 by Herzner).

What givesrobot.your-server.de

ip: 175.19.69.209	
Gateway:  175.19.69.193
Netmask:  255.255.255.224
Brodcast: 175.19.69.223

eth0- root node. It has internet.

Gateway:  175.19.69.193
Netmask:  255.255.255.224
Brodcast: 175.19.69.223

I want to give permanent access vm0to nginx and temporary access, for other virtual machines, for the duration of the software installation. Need to get a second virtual card on the root node? How will the Hetzner network react to this, giving me one IP for one MAC? Maybe instead of "additional network card" eth1you need to start a vmbr0bridge?

If so, what should be on this bridge vmbr0?

Gateway:  175.19.69.193
Netmask:  255.255.255.224
Brodcast: 175.19.69.223

net0- network card on the virtual machine vm0.

The network settings are vm0completely incomprehensible to me.

I spent a day reading tons of “manuals” with examples, but I don’t understand the basics and I’m terribly stupid. Help out!