{
  "_comment": "Build with `packer build -var-file=ubuntu1604-i386.json ubuntu.json`",
  "vm_name": "ubuntu1604-i386",
  "cpus": "1",
  "disk_size": "65536",
  "iso_checksum": "abe4529de141b7db0bbe4d92f248cd40aee30a2f",
  "iso_checksum_type": "sha1",
  "iso_name": "ubuntu-16.04.2-server-i386.iso",
  "iso_url": "http://releases.ubuntu.com/16.04/ubuntu-16.04.2-server-i386.iso",
  "memory": "512",
  "preseed" : "preseed.cfg",
  "vmware_guest_os_type": "ubuntu",
  "virtualbox_guest_os_type": "Ubuntu",
  "parallels_guest_os_type": "ubuntu"
}

{
  "_comment": "Build with `packer build -var-file=ubuntu1604-i386.json ubuntu.json`",
  "vm_name": "ubuntu1604-i386",
  "cpus": "1",
  "disk_size": "65536",
  "iso_checksum": "f6f464ddda1d1a021c56c79fda0418d0e603d416",
  "iso_checksum_type": "sha1",
  "iso_name": "ubuntu-16.04.3-server-i386.iso",
  "iso_url": "http://releases.ubuntu.com/16.04/ubuntu-16.04.3-server-i386.iso",
  "memory": "512",
  "preseed" : "preseed.cfg",
  "vmware_guest_os_type": "ubuntu",
  "virtualbox_guest_os_type": "Ubuntu",
  "parallels_guest_os_type": "ubuntu"
}

Switch to the new release of ubuntu server
Switch to the new release of ubuntu server
