Packer fails to build any LXC template

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#### Overview of the Issue

When trying to build an LXC template, packer will fail to do so.

#### Reproduction Steps

0. Use the packer template below
0. Run `packer build template.pkr.hcl`

### Packer version

1.9.1

### Simplified Packer Template

```
packer {
required_plugins {
lxc = {
version = ">= 1.0.0"
source = "github.com/hashicorp/lxc"
}
}
}

source "lxc" "jammy" {
config_file = "/etc/lxc/default.conf"
template_name = "download"
template_parameters = ["-d", "ubuntu", "-r", "jammy", "-a", "amd64"]
}

build {
sources = ["sources.lxc.jammy"]

provisioner "shell" {
inline = ["echo `uname -a`"]
}
}
```

```
# /etc/lxc/default.conf

lxc.net.0.type = veth
lxc.net.0.link = lxcbr0
lxc.net.0.flags = up
lxc.net.0.hwaddr = 00:16:3e:xx:xx:xx
```

### Operating system and Environment details

```
$ uname -a
Linux peanut 5.15.0-72-generic #79~20.04.1-Ubuntu SMP Thu Apr 20 22:12:07 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -a
No LSB modules are available.
Distributor ID: Linuxmint
Description: Linux Mint 20.3
Release: 20.3
Codename: una
```

### Log Fragments and crash.log files

https://gist.github.com/coaxial/4f258ffae2320d28f7c68f3bc8b162b8