VM as Gateway. NAT for local IPs

Hey Proxmoxers,
im facing a weird problem.

Proxmox Version 8.2.4.

I have a bond0, which is split into vlans. I have vmbr0 which is VLAN aware.

Lets say i have a private network 192.168.1.0/24 and some VMs there with a virtio NIC with vlan tag 100. Now I am adding another VM, that has two virtio NICs with vmbr0 with tag 999 and vmbr0 with tag 100. While 999 is the public network. This machine, lets call it gateway, MASQUERADEs (NATs) the traffic for the public network machines.

This does...

Read more