To reproduce the bug use non exists pool for the translation rules
```
set nat cgnat pool external ext-01 external-port-range '1024-65535'
set nat cgnat pool external ext-01 per-user-limit port '2000'
set nat cgnat pool external ext-01 range 192.168.122.222/32
set nat cgnat pool internal int-01 range '100.64.0.0/28'
set nat cgnat rule 10 source pool 'fake-pool'
set nat cgnat rule 10 translation pool 'ext-01'
```
commit:
```
vyos@r4# commit
[ nat cgnat ]
VyOS had an issue completing a command.
Report time: 2024-05-16 15:23:29
Image version: VyOS 1.5-rolling-202405140019
Release train: current
Built by:
[email protected]
Built on: Tue 14 May 2024 02:55 UTC
Build UUID: c30a637d-f3c1-473e-8af6-03c9bfaf0729
Build commit ID: 3463386246a9ac
Architecture: x86_64
Boot via: installed image
System type: KVM guest
Hardware vendor: QEMU
Hardware model: Standard PC (Q35 + ICH9, 2009)
Hardware S/N:
Hardware UUID: 166cfd25-7d3a-4eca-9ef6-0b655c9acf0f
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/nat_cgnat.py", line 284, in <module>
generate(c)
File "/usr/libexec/vyos/conf_mode/nat_cgnat.py", line 240, in generate
i_count = IPOperations(int_range).get_ips_count()
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/libexec/vyos/conf_mode/nat_cgnat.py", line 39, in __init__
self.ip_network = ipaddress.ip_network(ip_prefix) if '/' in ip_prefix else None
^^^^^^^^^^^^^^^^
TypeError: argument of type 'NoneType' is not iterable
[[nat cgnat]] failed
Commit failed
[edit]
vyos@r4# run show ver
Version: VyOS 1.5-rolling-202405140019
Release train: current
Release flavor: iso
Built by:
[email protected]
Built on: Tue 14 May 2024 02:55 UTC
Build UUID: c30a637d-f3c1-473e-8af6-03c9bfaf0729
Build commit ID: 3463386246a9ac
Architecture: x86_64
Boot via: installed image
System type: KVM guest
Hardware vendor: QEMU
Hardware model: Standard PC (Q35 + ICH9, 2009)
Hardware S/N:
Hardware UUID: 166cfd25-7d3a-4eca-9ef6-0b655c9acf0f
Copyright: VyOS maintainers and contributors
[edit]
vyos@r4#
```