Private networking on ovh with proxmox

readme.md

On your proxmox server edit /etc/interfaces and add a vmbr1 interface like so

auto lo
iface lo inet loopback

auto vmbr0
iface vmbr0 inet static
        address  167.114.101.88
        netmask  255.255.255.0
        gateway  167.114.101.254
        broadcast  167.114.101.255
        network 167.114.101.0
        bridge_ports eth0
        bridge_stp off
        bridge_fd 0


# Internal Network
auto vmbr1
iface vmbr1 inet static
    address 10.0.1.1/23
    bridge_ports dummy0
    bridge_stp off
    bridge_fd 0
    post-up /sbin/iptables -t nat -A POSTROUTING -o vmbr0 -j MASQUERADE
    pre-down /sbin/iptables -t nat -D POSTROUTING -o vmbr0 -j MASQUERADE

Bring up the new vmbr1 interface

ifdown vmbr1 && ifup vmbr1

Then enable ip forwarding in /etc/sysctl.conf

net.ipv4.ip_forward=1

Load the new values

sysctl -p /etc/sysctl.conf

On your vm configure networking like so

auto eth0
iface eth0 inet static
	address 10.0.1.100
	netmask 255.255.254.0
	gateway 10.0.1.1