diff --git a/src/osmo-upf/up_peer_fsm.c b/src/osmo-upf/up_peer_fsm.c
deleted file mode 100644
index ec37c0b..0000000
--- a/src/osmo-upf/up_peer_fsm.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * (C) 2021-2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
- * All Rights Reserved.
- *
- * Author: Neels Janosch Hofmeyr <nhofmeyr@sysmocom.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <osmocom/core/utils.h>
-#include <osmocom/core/fsm.h>
-
-#include <osmocom/upf/up_peer.h>
-
-enum up_peer_fsm_state {
-	UP_PEER_ST_NOT_ASSOCIATED,
-	UP_PEER_ST_ASSOCIATED,
-	UP_PEER_ST_GRACEFUL_RELEASE,
-};
-
-static const struct value_string up_peer_fsm_event_names[] = {
-	OSMO_VALUE_STRING(UP_PEER_EV_RX_ASSOC_SETUP_REQ),
-	OSMO_VALUE_STRING(UP_PEER_EV_RX_ASSOC_UPD_REQ),
-	OSMO_VALUE_STRING(UP_PEER_EV_RX_SESSION_EST_REQ),
-	OSMO_VALUE_STRING(UP_PEER_EV_HEARTBEAT_FAILURE),
-	{}
-};
-
-static struct osmo_fsm up_peer_fsm;
-
-static const struct osmo_tdef_state_timeout up_peer_fsm_timeouts[32] = {
-	[UP_PEER_ST_GRACEFUL_RELEASE] = { .T = -21 },
-};
-
-/* Transition to a state, using the T timer defined in up_peer_fsm_timeouts.
- * Assumes local variable fi exists. */
-#define up_peer_fsm_state_chg(state) \
-	osmo_tdef_fsm_inst_state_chg(fi, state, \
-				     up_peer_fsm_timeouts, \
-				     g_upf_tdefs, \
-				     5)
-
-struct up_peer *up_peer_alloc(struct osmo_fsm_inst *parent_fi, uint32_t parent_event_term)
-{
-	struct up_peer *up_peer;
-
-	struct osmo_fsm_inst *fi = osmo_fsm_inst_alloc_child(&up_peer_fsm, parent_fi, parent_event_term);
-	OSMO_ASSERT(fi);
-
-	up_peer = talloc(fi, struct up_peer);
-	OSMO_ASSERT(up_peer);
-	fi->priv = up_peer;
-	*up_peer = (struct up_peer){
-		.fi = fi,
-	};
-
-	return up_peer;
-}
-
-static int up_peer_fsm_timer_cb(struct osmo_fsm_inst *fi)
-{
-	//struct up_peer *up_peer = fi->priv;
-	/* Return 1 to terminate FSM instance, 0 to keep running */
-	return 1;
-}
-
-static void up_peer_not_associated_action(struct osmo_fsm_inst *fi, uint32_t event, void *data)
-{
-	//struct up_peer *up_peer = fi->priv;
-
-	switch (event) {
-
-	case UP_PEER_EV_RX_ASSOC_SETUP_REQ:
-		// FIXME
-		break;
-
-	default:
-		OSMO_ASSERT(false);
-	}
-}
-
-static void up_peer_associated_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
-{
-	//struct up_peer *up_peer = fi->priv;
-	// FIXME
-}
-
-static void up_peer_associated_action(struct osmo_fsm_inst *fi, uint32_t event, void *data)
-{
-	//struct up_peer *up_peer = fi->priv;
-
-	switch (event) {
-
-	case UP_PEER_EV_RX_ASSOC_UPD_REQ:
-		// FIXME
-		break;
-
-	case UP_PEER_EV_RX_SESSION_EST_REQ:
-		// FIXME
-		break;
-
-	case UP_PEER_EV_HEARTBEAT_FAILURE:
-		// FIXME
-		break;
-
-	default:
-		OSMO_ASSERT(false);
-	}
-}
-
-static void up_peer_graceful_release_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
-{
-	//struct up_peer *up_peer = fi->priv;
-	// FIXME
-}
-
-static void up_peer_graceful_release_action(struct osmo_fsm_inst *fi, uint32_t event, void *data)
-{
-	//struct up_peer *up_peer = fi->priv;
-
-	switch (event) {
-
-	case UP_PEER_EV_HEARTBEAT_FAILURE:
-		// FIXME
-		break;
-
-	default:
-		OSMO_ASSERT(false);
-	}
-}
-
-#define S(x)    (1 << (x))
-
-static const struct osmo_fsm_state up_peer_fsm_states[] = {
-	[UP_PEER_ST_NOT_ASSOCIATED] = {
-		.name = "not_associated",
-		.in_event_mask = 0
-			| S(UP_PEER_EV_RX_ASSOC_SETUP_REQ)
-			,
-		.out_state_mask = 0
-			| S(UP_PEER_ST_ASSOCIATED)
-			,
-		.action = up_peer_not_associated_action,
-	},
-	[UP_PEER_ST_ASSOCIATED] = {
-		.name = "associated",
-		.in_event_mask = 0
-			| S(UP_PEER_EV_RX_ASSOC_UPD_REQ)
-			| S(UP_PEER_EV_RX_SESSION_EST_REQ)
-			| S(UP_PEER_EV_HEARTBEAT_FAILURE)
-			,
-		.out_state_mask = 0
-			| S(UP_PEER_ST_GRACEFUL_RELEASE)
-			,
-		.onenter = up_peer_associated_onenter,
-		.action = up_peer_associated_action,
-	},
-	[UP_PEER_ST_GRACEFUL_RELEASE] = {
-		.name = "graceful_release",
-		.in_event_mask = 0
-			| S(UP_PEER_EV_HEARTBEAT_FAILURE)
-			,
-		.out_state_mask = 0
-			,
-		.onenter = up_peer_graceful_release_onenter,
-		.action = up_peer_graceful_release_action,
-	},
-};
-
-static struct osmo_fsm up_peer_fsm = {
-	.name = "up_peer",
-	.states = up_peer_fsm_states,
-	.num_states = ARRAY_SIZE(up_peer_fsm_states),
-	.log_subsys = DSESSION,
-	.event_names = up_peer_fsm_event_names,
-	.timer_cb = up_peer_fsm_timer_cb,
-};
-
-static __attribute__((constructor)) void up_peer_fsm_register(void)
-{
-	OSMO_ASSERT(osmo_fsm_register(&up_peer_fsm) == 0);
-}