===== Set Static IP Address / Static route =====

==== ifupdown2 ====

First install the ''ifupdown2'' package:
<code bash>sudo apt install ifupdown2</code>
It will generate the file ''/etc/network/interfaces'' if it doesn't exist.

Then edit ''/etc/network/interfaces'' and add the following:
<code bash>
auto eth0
iface eth0 inet static
        address 172.16.1.20/24
        gateway 172.16.1.1 
        nameserver 172.16.1.1
</code>
Adjust the interface name, here ''eth0'', to your configuration.

Finally enable the interface by running:
<code bash>ifup eth0</code>

//Sourced from [[https://wiki.debian.org/NetworkConfiguration|wiki.debian.org/NetworkConfiguration]]//

==== Static route ====
To show static routes:
<code bash>ip route</code>

To add a static route run:
<code bash>ip route add <network>/<netmask> via <gateway></code>
Example:
''ip route add 10.205.0.0/24 gw 10.0.0.3''


==== Static route for LXC ====

To add a persistent static route for a Linux Container add the following line to the interface that should automatically add the route in ''/etc/network/interfaces'':

<code bash>
up route add -net <network>/<netmask> gw <gateway-ip>
</code>
Example:
''up route add -net 10.205.0.0/24 gw 10.0.0.3''

//→ tested with a Proxmox CT//


//Sourced from [[https://forum.proxmox.com/threads/lxc-container-and-static-route.43411/|forum.proxmox.com  LXC Container and static route]]//