diff --git a/src/libvlr/vlr_lu_fsm.h b/src/libvlr/vlr_lu_fsm.h
new file mode 100644
index 0000000..5cf13c7
--- /dev/null
+++ b/src/libvlr/vlr_lu_fsm.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <osmocom/core/fsm.h>
+
+enum vlr_lu_state {
+	VLR_ULA_S_IDLE,
+	VLR_ULA_S_WAIT_IMEISV,
+	VLR_ULA_S_WAIT_PVLR,	/* Waiting for ID from PVLR */
+	VLR_ULA_S_WAIT_AUTH,	/* Waiting for Authentication */
+	VLR_ULA_S_WAIT_CIPH,	/* Waiting for Ciphering Complete */
+	VLR_ULA_S_WAIT_IMSI,	/* Waiting for IMSI from MS */
+	VLR_ULA_S_WAIT_HLR_UPD,	/* Waiting for end of HLR update */
+	VLR_ULA_S_WAIT_LU_COMPL,/* Waiting for LU complete */
+	VLR_ULA_S_WAIT_LU_COMPL_STANDALONE, /* Standalone VLR */
+	VLR_ULA_S_DONE
+};
+
+void vlr_lu_fsm_init(void);