diff --git a/roles/clear-firewall/README.rst b/roles/clear-firewall/README.rst
index 54f00a6ad..2b64a1516 100644
--- a/roles/clear-firewall/README.rst
+++ b/roles/clear-firewall/README.rst
@@ -3,3 +3,7 @@ Clear firewall rules from test nodes
 Some test workloads manage all of their own firewall rules, and
 pre-existing firewall rules can pollute the system. This role
 clears out firewall rules for both ipv4 and ipv6.
+
+You may want to consult your Zuul system's system administrator
+prior to using this role as the preexisting firewall configuration
+may provide necessary functionality.