MWAN3: does not detect connection failure when receives ICMP destination unreachable.
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Description
We have notices that MWAN3 does not detect that one of the WAN connection is failing if it receives ICMP destination unreachable, it considers that the ICMP ping is working and the status of the interface is considered UP and running.
Is there any way to avoid this behaviour?
We have another router with a cellular connection connected to the WAN interface.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue names no files, tests, or entry points. Start by reproducing MWAN3 behavior with an ICMP destination-unreachable response on the cellular WAN connection, then trace how that response affects interface status. Done means the failing connection is detected and the WAN interface is no longer reported as UP.
Written by the indexing model from the issue text.
Assessment
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100