Version:
Version: VyOS 20260519
Release train: current
Release flavor: generic
Built by: batman@flexcoders.dev
Built on: Tue 19 May 2026 16:43 UTC
Build UUID: 8831142c-2bf5-4b77-900a-b62398321a33
Build commit ID: 440a78d5e423e4
Architecture: x86_64
Boot via: installed image
System type: VMware guest
I have this config:
set interfaces dummy dum0 description 'Dummy for incoming IPv6 traffic'
set interfaces dummy dum0 mtu 1500
set interfaces dummy dum0 address fdb4:5ed0:c509::1/48
set nat66 destination rule 8 description 'Public fixed IPv6'
set nat66 destination rule 8 inbound-interface name 'pppoe0'
set nat66 destination rule 8 destination address xxxx:xxxx:41:c000::1
set nat66 destination rule 8 translation address fdb4:5ed0:c509::1
When I try to do
delete nat66 destination rule 8 inbound-interface name 'pppoe0'
commit
I get
[ nat66 ]
Traceback (most recent call last):
File "/usr/libexec/vyos/services/vyos-configd", line 156, in run_script
script.generate(c)
File "/usr/libexec/vyos/conf_mode/nat66.py", line 133, in generate
render(nftables_nat66_config, 'firewall/nftables-nat66.j2', nat)
File "/usr/lib/python3/dist-packages/vyos/template.py", line 174, in render
rendered = render_to_string(template, content, formater, location)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/vyos/template.py", line 143, in render_to_string
rendered = template.render(content)
^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 1301, in render
self.environment.handle_exception()
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 936, in handle_exception
raise rewrite_traceback_stack(source=source)
File "/usr/share/vyos/templates/firewall/nftables-nat66.j2", line 18, in top-level template code
{{ config | nat_rule(rule, 'destination', ipv6=True) }}
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/vyos/template.py", line 716, in nat_rule
return parse_nat_rule(rule_conf, rule_id, nat_type, ipv6)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/vyos/nat.py", line 41, in parse_nat_rule
iiface = rule_conf['inbound_interface']['group']
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
KeyError: 'group'
[[nat66]] failed