Help:Unix
From BrikiWiki
Routing to Virtual Machines
Setup is a linux (ubuntu-20.04) instalation with kvm hypervisor installed. Usecase is to be able to connect over local network to guest systems on host from a client. In this case the client is running ubuntu 20.04 cinamon remix
On client macine
ip route add 192.168.122.0/24 via 192.168.0.10
To make persistent
add route via network manager. System Settings / Network / Wired / IPv4 / Routes
On host machine
iptables -I FORWARD -m state -d 192.168.122.0/24 --state NEW,RELATED,ESTABLISHED -j ACCEPT
to make persistent apt install iptables-persistent