diff --git a/doc/source/configuration/network.rst b/doc/source/configuration/network.rst
index 847955cdcb459ff85858ea69d843d5eac1046767..095d287de9d254e96d0954a40de11301d136abe6 100644
--- a/doc/source/configuration/network.rst
+++ b/doc/source/configuration/network.rst
@@ -535,7 +535,8 @@ To configure network roles in a system with two networks, ``example1`` and
    internal_net_name: example2
    public_net_name: example2
    tunnel_net_name: example2
-   external_net_name: example2
+   external_net_names:
+     - example2
    storage_net_name: example2
    storage_mgmt_net_name: example2
    swift_storage_net_name: example2