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Pseudo-Ethernet: source-interface must not be member of a bridge
Closed, ResolvedPublicBUG


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/", 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

image.png (1×1 px, 141 KB)


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

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.
erkin set Issue type to Bug (incorrect behavior).Aug 29 2021, 1:26 PM
erkin removed a subscriber: Active contributors.