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Pseudo-Ethernet: source-interface must not be member of a bridge
In progress, Requires assessmentPublicBUG


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:
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/", line 98, in <module>
  File "/usr/libexec/vyos/conf_mode/", line 89, in apply
    p = MACVLANIf(peth['ifname'], **conf)
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/", line 237, in __init__
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/", line 53, in _create
  File "/usr/lib/python3/dist-packages/vyos/ifconfig/", line 51, in _cmd
    return cmd(command, self.debug)
  File "/usr/lib/python3/dist-packages/vyos/", 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
exit code: 2

A validation check should be added.

Same error persists in VyOS 1.2.5


Difficulty level
Easy (less than an hour)
Why the issue appeared?
Implementation mistake
Is it a breaking change?
Perfectly compatible

Event Timeline

c-po changed the task status from Open to In progress.Aug 15 2020, 3:35 PM
c-po claimed this task.
c-po created this task.
c-po moved this task from In Progress to Finished on the VyOS 1.3 Equuleus board.
dmbaturin changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.
dmbaturin changed Why the issue appeared? from Will be filled on close to Implementation mistake.