buglwIP - A Lightweight TCP/IP stack - Bugs: bug #67102, Ohter compatibility issue with...

 
 

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bug #67102: Ohter compatibility issue with IGMPv1

Submitter:  zmw <zmw12306>
Submitted:  Thu 08 May 2025 04:06:51 AM UTC
   
 
Category:  IPv4 Severity:  3 - Normal
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Planned Release:  None
lwIP version:  git head

Thu 08 May 2025 04:06:51 AM UTC, original submission:  

Although the note1 mentions this implementation does not support v1, it would be necessary to support compatibility. In that case, the current implementation:
1. Missing Report Version Selection Logic** - VALID INCONSISTENCY section 4
   - The RFC mandates version selection based on querier version for both solicited and unsolicited reports
   - The `igmp_send()` function only handles v2 reports without version consideration
2. missing Version 1 Router Present Timeout

zmw <zmw12306>

 

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