diff --git a/roles/monitoring/defaults/main.yml b/roles/monitoring/defaults/main.yml
index 714996b..384ff3a 100644
--- a/roles/monitoring/defaults/main.yml
+++ b/roles/monitoring/defaults/main.yml
@@ -1,6 +1,8 @@
 ---
 # Addresses outside the inventory that push metrics and logs to the hub too.
-# The boxes in the inventory are always allowed. sf and sf2 (ipni/infra) go
-# here when they move off grafana.ipni.io:
-#   monitoring_ingest_extra_sources: [103.232.206.165, 103.232.206.162]
-monitoring_ingest_extra_sources: []
+# The boxes in the inventory are always allowed. sf and sf2 (ipni/infra) run
+# Alloy next to their old agents while they move off grafana.ipni.io
+# (ipni/infra#166, #188).
+monitoring_ingest_extra_sources:
+  - 103.232.206.165  # sf
+  - 103.232.206.162  # sf2