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[WIP]adding proto kernel routes and rules on host #3392

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@yash97 yash97 commented Aug 7, 2025

What type of PR is this?

improvement
Which issue does this PR fix?:

bottlerocket-os/bottlerocket#3436

#1600
What does this PR do / Why do we need it?:
Right now CNI is dependent on config

[Network]
ManageForeignRoutes=no
ManageForeignRoutingPolicyRules=no

But by creating routes with proto kernel we can avoid cleanup from systemd. Thus eliminating dependency from this config, making cni resilient.
Testing done on this change:

Will this PR introduce any new dependencies?:

Will this break upgrades or downgrades? Has updating a running cluster been tested?:

Does this change require updates to the CNI daemonset config files to work?:

Does this PR introduce any user-facing change?:


By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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