vyos@vyos:~$ configure 
WARNING: You are currently configuring a live-ISO environment, changes will not persist until installed
[edit]
vyos@vyos# edit nat destination rule 1
[edit nat destination rule 1]
vyos@vyos# set inbound-interface eth0
[edit nat destination rule 1]
vyos@vyos# set destination address 1.0.0.0/24
[edit nat destination rule 1]
vyos@vyos# set translation address 2.0.0.0/24
[edit nat destination rule 1]
vyos@vyos# commit
[ nat ]
VyOS had an issue completing a command.

We are sorry that you encountered a problem while using VyOS.
There are a few things you can do to help us (and yourself):
- Make sure you are running the latest version of the code available at
  https://downloads.vyos.io/rolling/current/amd64/vyos-rolling-latest.iso
- Consult the forum to see how to handle this issue
  https://forum.vyos.io
- Join our community on slack where our users exchange help and advice
  https://vyos.slack.com

When reporting problems, please include as much information as possible:
- do not obfuscate any data (feel free to contact us privately if your 
  business policy requires it)
- and include all the information presented below

Report Time:      2021-02-12 21:29:18
Image Version:    VyOS 1.4-rolling-202102121338
Release Train:    sagitta

Built by:         autobuild@vyos.net
Built on:         Fri 12 Feb 2021 13:38 UTC
Build UUID:       bc737bd6-a1da-4443-876d-33c52dfefbdd
Build Commit ID:  aec60effa4e36e

Architecture:     x86_64
Boot via:         livecd
System type:      KVM guest

Hardware vendor:  QEMU
Hardware model:   Standard PC (Q35 + ICH9, 2009)
Hardware S/N:     
Hardware UUID:    c57f3fa4-9552-406b-b205-6f5ee80eafbd

Traceback (most recent call last):
  File "/usr/libexec/vyos/conf_mode/nat.py", line 201, in <module>
    generate(c)
  File "/usr/libexec/vyos/conf_mode/nat.py", line 186, in generate
    permission=0o755)
  File "/usr/lib/python3/dist-packages/vyos/template.py", line 112, in render
    rendered = render_to_string(template, content, formater)
  File "/usr/lib/python3/dist-packages/vyos/template.py", line 82, in render_to_string
    rendered = template.render(content)
  File "/usr/lib/python3/dist-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/lib/python3/dist-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/usr/share/vyos/templates/firewall/nftables-nat.tmpl", line 148, in top-level template code
    {{ nat_rule(rule, config, 'PREROUTING') }}
  File "/usr/lib/python3/dist-packages/jinja2/runtime.py", line 579, in _invoke
    rv = self._func(*arguments)
  File "/usr/share/vyos/templates/firewall/nftables-nat.tmpl", line 27, in template
    {%         set trns_addr = 'dnat ip prefix to ip daddr map { ' + config.source.address + ' : ' + config.translation.address + ' }' %}
  File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 430, in getattr
    return getattr(obj, attribute)
jinja2.exceptions.UndefinedError: 'dict object' has no attribute 'source'



[[nat]] failed
Commit failed
[edit nat destination rule 1]