[action] [PR:15575] [staticroutebfd] fix static route uninstall issue if no nexthop #16133
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…re not reachable (sonic-net#15575) fix static route uninstall issue when all nexthops are not reachable. the feature was working but the bug was introduced when support dynamic bfd enable/disable. Added UT testcase to guard this.
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Original PR: #15575 |
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fixes #15574
fix static route uninstall issue when all nexthops are not reachable.
the feature was working but the bug was introduced when support dynamic bfd enable/disable.
Why I did it
If a static route is bfd protected, when all the bfd sessions are down and all the nexthop need to be removed from the static route, it fails because a kip condition is missing.
Work item tracking
How I did it
To support bfd config dynamic change and avoid race condition when delete static route, there is a skip checking for staticRouteMgr(appl_db) to check if the deletion should be skipped. Besides checking if the route exists in config_db, also need to check if the route is bfd protected.
How to verify it
verified it both in UT and in real testbed.
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)