Manage external site-prober actions va API and Dashboard

configs/control-api.example.yaml

@@ -100,7 +100,11 @@ targets:
     - "https://packages.ubuntu.com"
 
 # Inbound checks the 3 external-site probers run directly against each
-# validator's currently-assigned floating IP.
+# validator's currently-assigned floating IP. Like validators/sites/targets/
+# check_types above, this is only a bootstrap seed for a fresh, empty
+# database; after that it's managed at runtime via PUT
+# /api/v1/admin/config/inbound-checks (or the dashboard's /settings page)
+# and this field is ignored.
 inbound_checks:
   ports: [22, 80, 443, 8080]
   icmp: true