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Check pod CIDR overlaps when reusing a router #1219
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area/control-planeControl plane relatedControl plane relatedkind/enhancementEnhancement, improvement, extensionEnhancement, improvement, extensionlifecycle/staleDenotes an issue or PR has remained open with no activity and has become stale.Denotes an issue or PR has remained open with no activity and has become stale.platform/openstackOpenStack platform/infrastructureOpenStack platform/infrastructure
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area/control-planeControl plane relatedControl plane relatedkind/enhancementEnhancement, improvement, extensionEnhancement, improvement, extensionlifecycle/staleDenotes an issue or PR has remained open with no activity and has become stale.Denotes an issue or PR has remained open with no activity and has become stale.platform/openstackOpenStack platform/infrastructureOpenStack platform/infrastructure
How to categorize this issue?
/area control-plane
/kind enhancement
/platform openstack
What would you like to be added:
Add extra safety checks for non-overlay shoots reusing the same router. In these cases CCMs may compete for similar pod routes (based on the dest address) and the Neutron API may be spammed with route creation requests.
Currently, this is on the user's side to detect and fix those issues. We can introduce additional checks that at least check on the same project for more uses of the same router and verify their network settings.
Why is this needed: