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In this blogpost, the author details a painful lesson learned from using the default Pod CIDR in Cilium. It serves as a cautionary tale for others to avoid potential network configuration issues.
https://medium.com/@isalapiyarisi/learned-it-the-hard-way-dont-use-cilium-s-default-pod-cidr-89a78d6df098
Medium Learned it the hard way: Don’t use Cilium’s default Pod CIDR Relying on a default Cilium config led to a complete ingress failure, 8 months after initial the deployment. A ticking time bomb, so to.
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