Symptom
Migrating VM with HBR from one site to the other does not update the COOP correctly
After migrating from Site 1 [where everything is working fine] to Site 2:
- Outside routers will start receiving the HBR from site 2.
- Traffic across sites is not working as Coop DB is not updated on Site 1.
After migrating from Site 2 to Site 1:
- Outside routers are still receiving the routes from Site 2 -- Outage in reaching the VM
- Traffic across sites are still not working [Coop DB is not updated on site 2, and not changed in site 1 as it was already pointing locally]
Conditions
Issue only seen on Multisite
Coop DB is not updated after migrating the VM, we still receive the route from the local leaf and advertising it to the local boarder leaf
Workaround
disable the HBR and reenable it, it will trigger the Coop update and the advertisement will happen fine from the correct site.
Further Problem Description
A similar bug can be CSCvy18083, but in that bug, the Coop DB should be updated correctly unlike our bug
