diff --git a/bpf/loader/Android.bp b/bpf/loader/Android.bp
index b08913a..edb260c 100644
--- a/bpf/loader/Android.bp
+++ b/bpf/loader/Android.bp
@@ -56,15 +56,15 @@
     installable: false,
 }
 
-// Versioned netbpfload init rc: init system will process it only on api T/33+ devices
+// Versioned netbpfload init rc: init system will process it only on api S/31+ devices
 // Note: R[30] S[31] Sv2[32] T[33] U[34] V[35])
 //
 // For details of versioned rc files see:
 // https://android.googlesource.com/platform/system/core/+/HEAD/init/README.md#versioned-rc-files-within-apexs
 prebuilt_etc {
-    name: "netbpfload.33rc",
-    src: "netbpfload.33rc",
-    filename: "netbpfload.33rc",
+    name: "netbpfload.31rc",
+    src: "netbpfload.31rc",
+    filename: "netbpfload.31rc",
     installable: false,
 }
 
diff --git a/bpf/loader/netbpfload.33rc b/bpf/loader/netbpfload.31rc
similarity index 77%
rename from bpf/loader/netbpfload.33rc
rename to bpf/loader/netbpfload.31rc
index eb937dd..6bc488e 100644
--- a/bpf/loader/netbpfload.33rc
+++ b/bpf/loader/netbpfload.31rc
@@ -1,6 +1,8 @@
-# This file takes effect only on T and U (on V netbpfload.35rc takes priority).
+# This file takes effect only on S, T and U (on V netbpfload.35rc takes priority).
 #
-# The service is started from netd's libnetd_updatable shared library
+# The service is started from netd's
+#   S: dnsresolver call into ADnsHelper_init
+#   T/U: libnetd_updatable shared library
 # on initial (boot time) startup of netd.
 #
 # However we never start this service on U QPR3.