Forwarding a network card in KVM?

Question

KVM

How to forward a network card to kvm so that the host does not touch it at all, that is, only the guest should communicate with the card.
There are modes:
default
vepa
bridge
private
passtrouth
If, of course, I look in that place ...

Answer 1

I found everything, I dug in the wrong place.
Here is the solution
https://forum.pfsense.org/index.php?topic=50013.0
sudo mousepad /etc/network/interfaces
## this is for the internal network
auto vmbr0
iface vmbr0 inet static
address 192.168.1.3
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports eth0
bridge_stp on
bridge_fd 0
## this is for guest
auto vmbr10
iface vmbr10 inet manual
bridge_ports eth1
bridge_stp off
bridge_fd 0