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-rw-r--r--plugin/file/README.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/plugin/file/README.md b/plugin/file/README.md
index e3b1bb99d..1643251c2 100644
--- a/plugin/file/README.md
+++ b/plugin/file/README.md
@@ -28,7 +28,7 @@ If you want to round robin A and AAAA responses look at the *loadbalance* plugin
file DBFILE [ZONES... ] {
transfer to ADDRESS...
no_reload
- upstream ADDRESS...
+ upstream [ADDRESS...]
}
~~~
@@ -42,6 +42,7 @@ file DBFILE [ZONES... ] {
pointing to external names. This is only really useful when CoreDNS is configured as a proxy, for
normal authoritative serving you don't need *or* want to use this. **ADDRESS** can be an IP
address, and IP:port or a string pointing to a file that is structured as /etc/resolv.conf.
+ If no **ADDRESS** is given, CoreDNS will resolve CNAMEs against itself.
## Examples