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-rw-r--r--plugin/forward/README.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/plugin/forward/README.md b/plugin/forward/README.md
index 52625249c..64e561106 100644
--- a/plugin/forward/README.md
+++ b/plugin/forward/README.md
@@ -107,7 +107,7 @@ If monitoring is enabled (via the *prometheus* plugin) then the following metric
* `coredns_forward_requests_total{to}` - query count per upstream.
* `coredns_forward_responses_total{to}` - Counter of responses received per upstream.
-* `coredns_forward_request_duration_seconds{to}` - duration per upstream interaction.
+* `coredns_forward_request_duration_seconds{to, rcode, type}` - duration per upstream, RCODE, type
* `coredns_forward_responses_total{to, rcode}` - count of RCODEs per upstream.
* `coredns_forward_healthcheck_failures_total{to}` - number of failed health checks per upstream.
* `coredns_forward_healthcheck_broken_total{}` - counter of when all upstreams are unhealthy,