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ip_mroute: allow MRT_DEL_MFC even if there are pending upcalls
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Authored by kp on Dec 13 2023, 1:01 PM.
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Details

Summary

In del_mfc() we try to find the forwarding entry, but that fails to find
the entry if mfc_stall_ring is not empty.

We should find the entry anyway, and destroy it (and any pending
messages) on delete.

Sponsored by: Rubicon Communications, LLC ("Netgate")

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rG FreeBSD src repository
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