One NIC and two public IP adress

[nexioh]

Dear all,

I've been struggling with setting up my server for a few days now.
Here is my situation:
I have a server with one network interface.
I have a public IP x.x.x.3 and i ordered another public ip wich is x.x.x.21
What I'm trying to do is to setup two subnets, one for each public IP.
I've reached the point where i can ping my second public ip adress (x.x.x.21) from my computer at home but it's impossible to ping the internet with this ip (using the command: ping -I vmbr0 google.fr)

I dont have any idea on how to set it up to make it work, I hope you can help me.

Thanks in advance !

 

[wolfgang]

Hi,

can you send your network config?

 

[nexioh]

Hello, here it is !

### Hetzner Online GmbH installimage

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback
iface lo inet6 loopback

auto enp3s0
iface enp3s0 inet static
  address xx.xx.xx.3
  netmask 255.255.255.224
  gateway x.xx.x.1
  # route xx.xx.xx.0/27 via xx.xx.xx.1
  up route add -net xx.xx.xx.0 netmask 255.255.255.224 gw xx.xx.xx.1 dev enp3s0

auto vmbr0
iface vmbr0 inet static
address xx.xx.xx.21
netmask 255.255.255.224
    bridge_ports none
    bridge_stp off
    bridge_fd 0
    bridge_maxwait 0
    pre-up brctl addbr vmbr0
    up ip route add 192.168.1.20/24 dev vmbr0

Thanks in advance for your help