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zebra: fix missing kernel routes (backport #17326) #17359

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zebra: fix missing kernel routes (backport #17326) #17359

wants to merge 2 commits into from

Commits on Nov 5, 2024

  1. zebra: fix missing kernel routes 

    The `rib_update_handle_kernel_route_down_possibility()` didn't consider
the kernel routes ( blackhole )  without interface.  When some other
interfaces are down, these kernel routes will be wrongly removed.

Signed-off-by: anlan_cs <anlan_cs@126.com>
(cherry picked from commit 44a82da)

# Conflicts:
#	zebra/zebra_rib.c
    @anlancs @mergify
    anlancs authored and mergify[bot] committed Nov 5, 2024
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  2. test: add test case for kernel blackhole routes 

    The test verifies that a kernel blackhole route is not affected by
interface's link change.

Signed-off-by: anlan_cs <anlan_cs@126.com>
(cherry picked from commit 0073a87)

# Conflicts:
#	tests/topotests/zebra_multiple_connected/test_zebra_multiple_connected.py
    @anlancs @mergify
    anlancs authored and mergify[bot] committed Nov 5, 2024
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