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Initially we were using Weave because it was super easy to install (single kubectl apply -f command), but we now have multiple problems: - it is not maintained anymore - its network policy controller seems to have subtle bugs (I had multiple classes in 2026 where we ran into policies that didn't work as intended, but worked fine when trying on another cluster that used Cilium) - it doesn't support IPV6 We did a test run with Cilium on a few IPv6-only clusters. It worked fine. Then a test run on dual stack clusters. Now we're using Cilium on all kubeadm clusters (removing support for Weave) and we've updated all materials to either remove or update mentions to Weave.