If your peth source-interface is also member of a bridge you will get an error:
```
Report Time: 2020-08-15 17:33:04
Image Version: VyOS 1.3-rolling-202008130721
Release Train: equuleus
Built by:
[email protected]
Built on: Thu 13 Aug 2020 07:21 UTC
Build UUID: 93b236d9-08bf-4d9e-a05f-fa67d8fbd7d0
Build Commit ID: 99114c57bad638
Architecture: x86_64
Boot via: installed image
System type: bare metal
Hardware vendor: PC Engines
Hardware model: apu4
Hardware S/N: 1360315
Hardware UUID: Unknown
Traceback (most recent call last):
File "/usr/libexec/vyos/conf_mode/interfaces-pseudo-ethernet.py", line 98, in <module>
apply(c)
File "/usr/libexec/vyos/conf_mode/interfaces-pseudo-ethernet.py", line 89, in apply
p = MACVLANIf(peth['ifname'], **conf)
File "/usr/lib/python3/dist-packages/vyos/ifconfig/interface.py", line 237, in __init__
self._create()
File "/usr/lib/python3/dist-packages/vyos/ifconfig/macvlan.py", line 53, in _create
self._cmd(cmd.format(**self.config))
File "/usr/lib/python3/dist-packages/vyos/ifconfig/control.py", line 51, in _cmd
return cmd(command, self.debug)
File "/usr/lib/python3/dist-packages/vyos/util.py", line 179, in cmd
raise OSError(code, feedback)
FileNotFoundError: [Errno 2] failed to run command: ip link add peth0 link eth1 type macvlan mode private
returned:
exit code: 2
```
A validation check should be added.
Same error persists in VyOS 1.2.5
{F822983}