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Maniphest T7192

Bridge allows to specify the same member interface more than one time
Closed, ResolvedPublicBUG
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Description

set interfaces bridge br10 member interface eth1
set interfaces bridge br20 member interface eth1
commit

Checking the interface assignment afterwards shows

# ip link show dev br20
242: br20: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
    link/ether 62:34:3a:8a:fe:49 brd ff:ff:ff:ff:ff:ff
[edit]
# ip link show dev eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br20 state UP mode DEFAULT group default qlen 1000
    link/ether 00:50:56:b3:cd:ba brd ff:ff:ff:ff:ff:ff
    altname enp0s19
    altname ens19

The later addition wins and the CLI reports eth1 is assigned to br20 master br20. A member interface can not be used multiple times.

Details

Version
1.5-stream-202502230940
Is it a breaking change?
Perfectly compatible
Issue type
Bug (incorrect behavior)

Related Objects

Event Timeline

c-po created this task.Feb 23 2025, 11:54 AM
c-po claimed this task.
c-po triaged this task as Normal priority.
c-po updated the task description. (Show Details)Feb 23 2025, 12:40 PM
c-po added a comment.Feb 23 2025, 12:48 PM

https://github.com/vyos/vyos-1x/pull/4363

pasik subscribed.Feb 23 2025, 4:30 PM
c-po added a project: VyOS 1.4 Sagitta (1.4.2).Feb 24 2025, 5:35 AM
c-po changed the task status from Open to In progress.Feb 24 2025, 5:04 PM
c-po mentioned this in rVYOSONEX3c0033508e67: bridge: T7192: fix verify() to not allow member interface used multiple times.Feb 24 2025, 5:40 PM
Restricted Repository Identity mentioned this in rVYOSONEXd50ce12c521b: Merge pull request #4363 from c-po/bridge-T7192.Feb 24 2025, 5:40 PM
c-po moved this task from Need Triage to Completed on the VyOS Rolling board.Feb 24 2025, 7:39 PM
c-po closed this task as Resolved.Feb 25 2025, 4:03 PM
c-po moved this task from Backlog to Finished on the VyOS 1.4 Sagitta (1.4.2) board.
c-po moved this task from Open to Finished on the VyOS 1.5 Circinus board.
dmbaturin renamed this task from bridge: fix verify() to not allow member interface used multiple times to Bridge allows to specify the same member interface more than one time.Mar 12 2025, 5:25 PM
dmbaturin mentioned this in 1.4.2.Apr 2 2025, 3:24 PM
dmbaturin edited projects, added VyOS 1.5 Circinus (1.5-stream-2025-Q2); removed VyOS 1.5 Circinus.Jul 9 2025, 10:41 AM