Pim: In SM mode, when there are both * G and SG routes, the join flag of the SG route out interface cannot be removed when receiving the SG prune message, only the join flag of the channel is removed

[mayise]

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Describe the bug

• Did you check if this is a duplicate issue?
• Did you test it on the latest FRRouting/frr master branch?

To Reproduce

Expected behavior

Screenshots

Versions

• OS Version:

• Kernel:Linux version 4.19.139

• FRR Version:8.5

Additional context

[mayise]

*G and SG route have different iifs and the same oif. Received SG prune message from OIF.

[donaldsharp]

Please actually provide a topology and output that shows the problem and steps to how you get it into this state. Without this minimal set of data this will be going no where.

[mayise]

@donaldsharp

The test topology is shown in the figure above.

When the ge1 interface of the device under test receives the JOIN packet between *G and SG, the PIM running status is as follows:

Then, the ge1 interface of the device under test receives a SG type prune packet, and the PIM running status is as follows:

There may be errors in the handling here.

[github-actions]

This issue is stale because it has been open 180 days with no activity. Comment or remove the autoclose label in order to avoid having this issue closed.

[Jafaral]

Should test this

[github-actions]

This issue is stale because it has been open 180 days with no activity. Comment or remove the autoclose label in order to avoid having this issue closed.

[frrbot]

This issue will be automatically closed in the specified period unless there is further activity.