diff options
Diffstat (limited to 'middleware/etcd/stub_handler.go')
| -rw-r--r-- | middleware/etcd/stub_handler.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/middleware/etcd/stub_handler.go b/middleware/etcd/stub_handler.go index 4c00e82ee..ed760c7ce 100644 --- a/middleware/etcd/stub_handler.go +++ b/middleware/etcd/stub_handler.go @@ -1,6 +1,7 @@ package etcd import ( + "errors" "log" "github.com/miekg/coredns/middleware" @@ -18,7 +19,7 @@ type Stub struct { func (s Stub) ServeDNS(ctx context.Context, w dns.ResponseWriter, req *dns.Msg) (int, error) { if hasStubEdns0(req) { log.Printf("[WARNING] Forwarding cycle detected, refusing msg: %s", req.Question[0].Name) - return dns.RcodeRefused, nil + return dns.RcodeRefused, errors.New("stub forward cycle") } req = addStubEdns0(req) proxy, ok := (*s.Etcd.Stubmap)[s.Zone] |