diff options
Diffstat (limited to 'plugin/backend_lookup.go')
| -rw-r--r-- | plugin/backend_lookup.go | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/plugin/backend_lookup.go b/plugin/backend_lookup.go index 096cf806b..9e5c9eeec 100644 --- a/plugin/backend_lookup.go +++ b/plugin/backend_lookup.go @@ -372,6 +372,8 @@ func NS(ctx context.Context, b ServiceBackend, zone string, state request.Reques // ... and reset state.Req.Question[0].Name = old + seen := map[string]bool{} + for _, serv := range services { what, ip := serv.HostType() switch what { @@ -380,8 +382,13 @@ func NS(ctx context.Context, b ServiceBackend, zone string, state request.Reques case dns.TypeA, dns.TypeAAAA: serv.Host = msg.Domain(serv.Key) - records = append(records, serv.NewNS(state.QName())) extra = append(extra, newAddress(serv, serv.Host, ip, what)) + ns := serv.NewNS(state.QName()) + if _, ok := seen[ns.Ns]; ok { + continue + } + seen[ns.Ns] = true + records = append(records, ns) } } return records, extra, nil |