Is there a way to permanently configure the /etc/systemd/network/eth*.network of a LXC?

[Anotheruser]

Currently messing around with lxc containers and trying to add a lxc to more than 10 vlans.

Since this isnt possible via the proxmox ui (can only add max 10 interfaces) i did it inside the container, which works perfectly (see below),
the only issue proxmox overwrites the /etc/systemd/network/eth*.network on every container reboot and i kinda dont want to create a script that runs after every boot just adding it back.

Is there a way to prevent this or alternatively add additional arguments to the interfaces via lxc.conf?

Any advice appreciated

Setup inside the LXC

## /etc/systemd/network/eth1.network

[Match]
Name = eth1

[Network]
Description = Interface eth1 autoconfigured by PVE
DHCP = no
IPv6AcceptRA = false
VLAN=vlan10
VLAN=vlan20
VLAN=vlan30

One for Each VLAN, just replace the VLAN IDs

## /etc/systemd/network/vlan10.netdev

[NetDev]
Name=vlan10
Kind=vlan

[VLAN]
Id=690
Parent=eth1

## /etc/systemd/network/vlan10.network

[Match]
Name=vlan10

[Network]
DHCP=yes

 

[Indrek]

You can prevent Proxmox from overwriting a file by creating an empty file with the same name but '.pve-ignore' prepended.

So in your case you would create '/etc/systemd/network/.pve-ignore.eth0.network' and so on.

Or you can disable all modifications to the container by setting its OS type to 'unmanaged'.

https://pve.proxmox.com/pve-docs/chapter-pct.html#_guest_operating_system_configuration