pimd: During prefix-list update, behave as PIM_UPSTREAM_NOTJOINED sta… #17666
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…te (conformance issue)
Issue:
If there are any changes to the prefix list, we perform a re-lookup to map the correct RP for the group. Even if the S,G entry is PIM_UPSTREAM_NOTJOINED and in FHR, In the case of IGMPv3, an S,G entry can be created with no joins. this is not necessary.
https://www.rfc-editor.org/rfc/rfc4601#section-4.5.7 says no op in case of NOTJOINED
Solution:
To solve this issue, Stop RP mapping when the state is NOTJOINED
Ticket: #3496931