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Flip resolver forwarding for k8s zones to the in-cluster bind #288

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benvin merged 1 commits from benvin/externaldns-resolver-flip into main 2026-07-25 23:08:22 +10:00
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Author SHA1 Message Date
unkinben bdbbba3e70 Flip resolver forwarding for k8s zones to the in-cluster bind
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Step 3 of the external-dns → in-cluster bind migration: the client-visible
cutover. The openforwarder resolvers stop reading the legacy VM and forward
the k8s zones to the in-cluster bind-externaldns VIP (198.18.200.8), which
external-dns now populates.

- Repoint the fwd-k8s-syd1-au-unkin-net forwarder from the legacy VM anycast
  198.18.19.20 to the in-cluster bind-externaldns VIP 198.18.200.8.
- Add fwd-200-18-198-in-addr-arpa forwarding 200.18.198.in-addr.arpa to
  198.18.200.8, closing the reverse-zone gap so PTR lookups for the k8s LB
  range resolve after cutover.
- Refresh the header comment to describe the in-cluster upstream.
 2026-07-25 22:35:18 +10:00