I have a server with Proxmox OS installed and some virtual machines inside.
Following a guide found on the web i modified my /etc/network/interfaces like shown below to create a virutal interface named vmbr0:0.
Then I connected the virtual to the real adapter through this command
iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -o vmbr0 -j MASQUERADE
Everything works fine until I tryed to forward the port 80 to my apache VM with this command
iptables -t nat -A PREROUTING -i vmbr0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 10.0.0.2:80
The Apache VM has the 10.0.0.2 IP, it pings correctly the web and apache works great from the web, but apt-get is no more working giving all 404 errors on every source unless I disable the PREROUTING rule.
How can I do to solve this issue?? Thank you to all in advance
Here the /etc/network/interfaces file
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
iface eth0 inet manual
iface eth1 inet manual
auto vmbr0
iface vmbr0 inet static
address MY_PUBLIC_IP_ADDRESS
netmask 255.255.255.0
gateway MY_GATEWAY
bridge_ports eth0
bridge_stp off
bridge_fd 0
auto vmbr0:0
iface vmbr0:0 inet static
address 10.0.0.1
netmask 255.255.255.0
network 10.0.0.0
broadcast 10.0.0.255