Builder vagrant with libvirt: "Remote connection disconnect" error to connect to a box made from the packer-built image.

[hc-github-team-packer]

This issue was originally opened by @Romainj1 in hashicorp/packer#11405 and has been migrated to this repository. The original issue description is below.

---

Overview of the Issue

I am trying to use the vagrant builder. I achieve creating a new image out of an existing one in my example. But the image created seems unusable: When creating a new box out of the new image, with vagrant up, vagrant cannot ssh: Remote connection disconnect ...
I tried generic/debian10 and generic/debian9 as base images.

Reproduction Steps

Run:

cat > box.json <<EOF
{
  "builders": [
    {
      "communicator": "ssh",
      "source_path": "generic/debian10",
      "provider": "libvirt",
      "type": "vagrant"
    }
  ]
}
EOF

packer validate box.json
packer build box.json

Then as the doc mentions:

vagrant box add -f new-box ./output-vagrant/package.box
vagrant init new-box

Everything works as expected, until:

vagrant up

Where i am getting:

Bringing machine 'default' up with 'libvirt' provider...                                                                                                                                                           
==> default: Creating image (snapshot of base box volume).
==> default: Creating domain with the following settings...    
==> default:  -- Name:              devops-scripts_default
==> default:  -- Description:       Source: /home/rjacquier/dev/devops-scripts/Vagrantfile
==> default:  -- Domain type:       kvm            
==> default:  -- Cpus:              1                                                                    
==> default:  -- Feature:           acpi           
==> default:  -- Feature:           apic                                                                 
==> default:  -- Feature:           pae            
==> default:  -- Clock offset:      utc                                                                  
==> default:  -- Memory:            512M           
==> default:  -- Management MAC:                                                                         
==> default:  -- Loader:                           
==> default:  -- Nvram:                                                                                  
==> default:  -- Base box:          box 
==> default:  -- Storage pool:      default                                                              
==> default:  -- Image():     /home/.libvirt_images/devops-scripts_default.img, 128G
==> default:  -- Disk driver opts:  cache='default' 
==> default:  -- Kernel:                                                                                                                                                                                           
==> default:  -- Initrd:            
==> default:  -- Graphics Type:     vnc
==> default:  -- Graphics Port:     -1
==> default:  -- Graphics IP:       127.0.0.1
==> default:  -- Graphics Password: Not defined
==> default:  -- Video Type:        cirrus
==> default:  -- Video VRAM:        9216
==> default:  -- Sound Type:
==> default:  -- Keymap:            en-us
==> default:  -- TPM Backend:       passthrough
==> default:  -- TPM Path:          
==> default:  -- INPUT:             type=mouse, bus=ps2
==> default: Creating shared folders metadata...
==> default: Starting domain.
==> default: Waiting for domain to get an IP address...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 192.168.121.13:22
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Remote connection disconnect. Retrying...
    default: Warning: Connection reset. Retrying...
    default: Warning: Connection reset. Retrying...
    default: Warning: Remote connection disconnect. Retrying...
    default: Warning: Connection reset. Retrying...
    default: Warning: Remote connection disconnect. Retrying...
...

until it timeouts

Packer version

$ packer version
Packer v1.7.8

Simplified Packer Template

Json template:

{
  "builders": [
    {
      "communicator": "ssh",
      "source_path": "generic/debian10",
      "provider": "libvirt",
      "type": "vagrant"
    }
  ]
}

Operating system and Environment details

$ uname -a
Linux rjr-port 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux

$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 11 (bullseye)
Release:        11
Codename:       bullseye

$ vagrant --version
Vagrant 2.2.19

$ virsh --version
7.0.0
$ libvirtd --version
libvirtd (libvirt) 7.0.0