The in-cluster BIND resolvers have no IPv6 route but still try every AAAA nameserver. Each attempt fails with "network unreachable" yet counts toward the per-query recursion budget, so cold lookups of names with many dual-stack NS (registry.opentofu.org, cloudfront, crates.io, gcr.io) hit `quota reached` and SERVFAIL, surfacing as transient DNS errors in CI.
- mark all IPv6 servers bogus in the openforwarder view so recursion is IPv4-only
Reviewed-on: #553
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
9188ef9ac3