unkinben
39b180aec9
Kubernetes nodes querying the bind-resolvers LoadBalancer VIP (198.18.200.7) get REFUSED (EDE 18 Prohibited).
The service is `externalTrafficPolicy: Local`, which preserves the client source IP for traffic entering the cluster from outside — but a node querying the VIP never leaves via OSPF. Its own kube-proxy DNATs the LB IP in the OUTPUT chain and masquerades the source to a cluster-internal address (the node's flannel.1, e.g. 10.42.x.x). That address is not in `acl-main.unkin.net`, so the openforwarder view's match-clients rejects the query.
External clients preserve their real source IP and match acl-main, which is why only in-cluster hosts were affected.
Add `10.42.0.0/16` to `acl-main.unkin.net` so node-originated (masqueraded) resolver queries are permitted. This mirrors the authoritative cluster, which already allows the pod network (`allow-query { ...; 10.42.0.0/16; }`).
Reviewed-on: #271
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>