diff --git a/hostapd/Android.mk b/hostapd/Android.mk
index 3183323ef..a87ac8144 100644
--- a/hostapd/Android.mk
+++ b/hostapd/Android.mk
@@ -205,11 +205,6 @@ endif
 
 L_CFLAGS += -DCONFIG_CTRL_IFACE -DCONFIG_CTRL_IFACE_UNIX
 
-ifdef CONFIG_IAPP
-L_CFLAGS += -DCONFIG_IAPP
-OBJS += src/ap/iapp.c
-endif
-
 ifdef CONFIG_RSN_PREAUTH
 L_CFLAGS += -DCONFIG_RSN_PREAUTH
 CONFIG_L2_PACKET=y
diff --git a/hostapd/Makefile b/hostapd/Makefile
index f7f4c785b..42bb9e4c8 100644
--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -248,11 +248,6 @@ ifndef CONFIG_NO_CTRL_IFACE
 CFLAGS += -DCONFIG_CTRL_IFACE
 endif
 
-ifdef CONFIG_IAPP
-CFLAGS += -DCONFIG_IAPP
-OBJS += ../src/ap/iapp.o
-endif
-
 ifdef CONFIG_RSN_PREAUTH
 CFLAGS += -DCONFIG_RSN_PREAUTH
 CONFIG_L2_PACKET=y
diff --git a/hostapd/android.config b/hostapd/android.config
index efe252332..e2e6c7821 100644
--- a/hostapd/android.config
+++ b/hostapd/android.config
@@ -38,9 +38,6 @@ CONFIG_DRIVER_NL80211_QCA=y
 # Driver interface for no driver (e.g., RADIUS server only)
 #CONFIG_DRIVER_NONE=y
 
-# IEEE 802.11F/IAPP
-#CONFIG_IAPP=y
-
 # WPA2/IEEE 802.11i RSN pre-authentication
 #CONFIG_RSN_PREAUTH=y
 
diff --git a/hostapd/config_file.c b/hostapd/config_file.c
index 680f17ee0..0d340d252 100644
--- a/hostapd/config_file.c
+++ b/hostapd/config_file.c
@@ -2712,8 +2712,7 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		bss->eapol_key_index_workaround = atoi(pos);
 #ifdef CONFIG_IAPP
 	} else if (os_strcmp(buf, "iapp_interface") == 0) {
-		bss->ieee802_11f = 1;
-		os_strlcpy(bss->iapp_iface, pos, sizeof(bss->iapp_iface));
+		wpa_printf(MSG_INFO, "DEPRECATED: iapp_interface not used");
 #endif /* CONFIG_IAPP */
 	} else if (os_strcmp(buf, "own_ip_addr") == 0) {
 		if (hostapd_parse_ip_addr(pos, &bss->own_ip_addr)) {
diff --git a/hostapd/defconfig b/hostapd/defconfig
index b1fb56c3b..1a3d9f9ba 100644
--- a/hostapd/defconfig
+++ b/hostapd/defconfig
@@ -44,9 +44,6 @@ CONFIG_LIBNL32=y
 # Driver interface for no driver (e.g., RADIUS server only)
 #CONFIG_DRIVER_NONE=y
 
-# IEEE 802.11F/IAPP
-CONFIG_IAPP=y
-
 # WPA2/IEEE 802.11i RSN pre-authentication
 CONFIG_RSN_PREAUTH=y
 
diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
index 6c96a760a..a3c698480 100644
--- a/hostapd/hostapd.conf
+++ b/hostapd/hostapd.conf
@@ -41,7 +41,6 @@ interface=wlan0
 # bit 2 (4) = RADIUS
 # bit 3 (8) = WPA
 # bit 4 (16) = driver interface
-# bit 5 (32) = IAPP
 # bit 6 (64) = MLME
 #
 # Levels (minimum value for logged events):
@@ -1243,11 +1242,6 @@ eap_server=0
 # Whether to enable ERP on the EAP server.
 #eap_server_erp=1
 
-##### IEEE 802.11f - Inter-Access Point Protocol (IAPP) #######################
-
-# Interface to be used for IAPP broadcast packets
-#iapp_interface=eth0
-
 
 ##### RADIUS client configuration #############################################
 # for IEEE 802.1X with external Authentication Server, IEEE 802.11
diff --git a/hostapd/main.c b/hostapd/main.c
index 08896ffe2..8bfe24281 100644
--- a/hostapd/main.c
+++ b/hostapd/main.c
@@ -81,9 +81,6 @@ static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
 	case HOSTAPD_MODULE_DRIVER:
 		module_str = "DRIVER";
 		break;
-	case HOSTAPD_MODULE_IAPP:
-		module_str = "IAPP";
-		break;
 	case HOSTAPD_MODULE_MLME:
 		module_str = "MLME";
 		break;
diff --git a/src/ap/Makefile b/src/ap/Makefile
index bd3f33b77..54e48a0dd 100644
--- a/src/ap/Makefile
+++ b/src/ap/Makefile
@@ -18,7 +18,6 @@ CFLAGS += -DCONFIG_IEEE80211R_AP
 CFLAGS += -DCONFIG_WPS
 CFLAGS += -DCONFIG_PROXYARP
 CFLAGS += -DCONFIG_IPV6
-CFLAGS += -DCONFIG_IAPP
 CFLAGS += -DCONFIG_AIRTIME_POLICY
 
 LIB_OBJS= \
@@ -41,7 +40,6 @@ LIB_OBJS= \
 	hostapd.o \
 	hs20.o \
 	hw_features.o \
-	iapp.o \
 	ieee802_11_auth.o \
 	ieee802_11.o \
 	ieee802_11_ht.o \
diff --git a/src/ap/ap_config.h b/src/ap/ap_config.h
index e219160b0..17eb0682b 100644
--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -325,10 +325,6 @@ struct hostapd_bss_config {
 	int erp_send_reauth_start;
 	char *erp_domain;
 
-	int ieee802_11f; /* use IEEE 802.11f (IAPP) */
-	char iapp_iface[IFNAMSIZ + 1]; /* interface used with IAPP broadcast
-					* frames */
-
 	enum macaddr_acl {
 		ACCEPT_UNLESS_DENIED = 0,
 		DENY_UNLESS_ACCEPTED = 1,
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index ef988b634..bf7b1f89e 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -28,7 +28,6 @@
 #include "accounting.h"
 #include "ap_list.h"
 #include "beacon.h"
-#include "iapp.h"
 #include "ieee802_1x.h"
 #include "ieee802_11_auth.h"
 #include "vlan_init.h"
@@ -361,8 +360,6 @@ static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 	hapd->beacon_set_done = 0;
 
 	wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
-	iapp_deinit(hapd->iapp);
-	hapd->iapp = NULL;
 	accounting_deinit(hapd);
 	hostapd_deinit_wpa(hapd);
 	vlan_deinit(hapd);
@@ -1296,13 +1293,6 @@ static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 		return -1;
 	}
 
-	if (conf->ieee802_11f &&
-	    (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
-		wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
-			   "failed.");
-		return -1;
-	}
-
 #ifdef CONFIG_INTERWORKING
 	if (gas_serv_init(hapd)) {
 		wpa_printf(MSG_ERROR, "GAS server initialization failed");
@@ -3056,10 +3046,6 @@ void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 	hostapd_prune_associations(hapd, sta->addr);
 	ap_sta_clear_disconnect_timeouts(hapd, sta);
 
-	/* IEEE 802.11F (IAPP) */
-	if (hapd->conf->ieee802_11f)
-		iapp_new_station(hapd->iapp, sta);
-
 #ifdef CONFIG_P2P
 	if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
 		sta->no_p2p_set = 1;
diff --git a/src/ap/hostapd.h b/src/ap/hostapd.h
index 5b859b8a9..2358d1664 100644
--- a/src/ap/hostapd.h
+++ b/src/ap/hostapd.h
@@ -179,8 +179,6 @@ struct hostapd_data {
 	u64 acct_session_id;
 	struct radius_das_data *radius_das;
 
-	struct iapp_data *iapp;
-
 	struct hostapd_cached_radius_acl *acl_cache;
 	struct hostapd_acl_query_data *acl_queries;
 
diff --git a/src/ap/iapp.c b/src/ap/iapp.c
deleted file mode 100644
index 2556da30c..000000000
--- a/src/ap/iapp.c
+++ /dev/null
@@ -1,542 +0,0 @@
-/*
- * hostapd / IEEE 802.11F-2003 Inter-Access Point Protocol (IAPP)
- * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- *
- * Note: IEEE 802.11F-2003 was a experimental use specification. It has expired
- * and IEEE has withdrawn it. In other words, it is likely better to look at
- * using some other mechanism for AP-to-AP communication than extending the
- * implementation here.
- */
-
-/* TODO:
- * Level 1: no administrative or security support
- *	(e.g., static BSSID to IP address mapping in each AP)
- * Level 2: support for dynamic mapping of BSSID to IP address
- * Level 3: support for encryption and authentication of IAPP messages
- * - add support for MOVE-notify and MOVE-response (this requires support for
- *   finding out IP address for previous AP using RADIUS)
- * - add support for Send- and ACK-Security-Block to speedup IEEE 802.1X during
- *   reassociation to another AP
- * - implement counters etc. for IAPP MIB
- * - verify endianness of fields in IAPP messages; are they big-endian as
- *   used here?
- * - RADIUS connection for AP registration and BSSID to IP address mapping
- * - TCP connection for IAPP MOVE, CACHE
- * - broadcast ESP for IAPP ADD-notify
- * - ESP for IAPP MOVE messages
- * - security block sending/processing
- * - IEEE 802.11 context transfer
- */
-
-#include "utils/includes.h"
-#include <net/if.h>
-#include <sys/ioctl.h>
-#include <netpacket/packet.h>
-
-#include "utils/common.h"
-#include "utils/eloop.h"
-#include "common/ieee802_11_defs.h"
-#include "hostapd.h"
-#include "ap_config.h"
-#include "ieee802_11.h"
-#include "sta_info.h"
-#include "iapp.h"
-
-
-#define IAPP_MULTICAST "224.0.1.178"
-#define IAPP_UDP_PORT 3517
-#define IAPP_TCP_PORT 3517
-
-struct iapp_hdr {
-	u8 version;
-	u8 command;
-	be16 identifier;
-	be16 length;
-	/* followed by length-6 octets of data */
-} __attribute__ ((packed));
-
-#define IAPP_VERSION 0
-
-enum IAPP_COMMAND {
-	IAPP_CMD_ADD_notify = 0,
-	IAPP_CMD_MOVE_notify = 1,
-	IAPP_CMD_MOVE_response = 2,
-	IAPP_CMD_Send_Security_Block = 3,
-	IAPP_CMD_ACK_Security_Block = 4,
-	IAPP_CMD_CACHE_notify = 5,
-	IAPP_CMD_CACHE_response = 6,
-};
-
-
-/* ADD-notify - multicast UDP on the local LAN */
-struct iapp_add_notify {
-	u8 addr_len; /* ETH_ALEN */
-	u8 reserved;
-	u8 mac_addr[ETH_ALEN];
-	be16 seq_num;
-} __attribute__ ((packed));
-
-
-/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
-struct iapp_layer2_update {
-	u8 da[ETH_ALEN]; /* broadcast */
-	u8 sa[ETH_ALEN]; /* STA addr */
-	be16 len; /* 6 */
-	u8 dsap; /* null DSAP address */
-	u8 ssap; /* null SSAP address, CR=Response */
-	u8 control;
-	u8 xid_info[3];
-} __attribute__ ((packed));
-
-
-/* MOVE-notify - unicast TCP */
-struct iapp_move_notify {
-	u8 addr_len; /* ETH_ALEN */
-	u8 reserved;
-	u8 mac_addr[ETH_ALEN];
-	u16 seq_num;
-	u16 ctx_block_len;
-	/* followed by ctx_block_len bytes */
-} __attribute__ ((packed));
-
-
-/* MOVE-response - unicast TCP */
-struct iapp_move_response {
-	u8 addr_len; /* ETH_ALEN */
-	u8 status;
-	u8 mac_addr[ETH_ALEN];
-	u16 seq_num;
-	u16 ctx_block_len;
-	/* followed by ctx_block_len bytes */
-} __attribute__ ((packed));
-
-enum {
-	IAPP_MOVE_SUCCESSFUL = 0,
-	IAPP_MOVE_DENIED = 1,
-	IAPP_MOVE_STALE_MOVE = 2,
-};
-
-
-/* CACHE-notify */
-struct iapp_cache_notify {
-	u8 addr_len; /* ETH_ALEN */
-	u8 reserved;
-	u8 mac_addr[ETH_ALEN];
-	u16 seq_num;
-	u8 current_ap[ETH_ALEN];
-	u16 ctx_block_len;
-	/* ctx_block_len bytes of context block followed by 16-bit context
-	 * timeout */
-} __attribute__ ((packed));
-
-
-/* CACHE-response - unicast TCP */
-struct iapp_cache_response {
-	u8 addr_len; /* ETH_ALEN */
-	u8 status;
-	u8 mac_addr[ETH_ALEN];
-	u16 seq_num;
-} __attribute__ ((packed));
-
-enum {
-	IAPP_CACHE_SUCCESSFUL = 0,
-	IAPP_CACHE_STALE_CACHE = 1,
-};
-
-
-/* Send-Security-Block - unicast TCP */
-struct iapp_send_security_block {
-	u8 iv[8];
-	u16 sec_block_len;
-	/* followed by sec_block_len bytes of security block */
-} __attribute__ ((packed));
-
-
-/* ACK-Security-Block - unicast TCP */
-struct iapp_ack_security_block {
-	u8 iv[8];
-	u8 new_ap_ack_authenticator[48];
-} __attribute__ ((packed));
-
-
-struct iapp_data {
-	struct hostapd_data *hapd;
-	u16 identifier; /* next IAPP identifier */
-	struct in_addr own, multicast;
-	int udp_sock;
-	int packet_sock;
-};
-
-
-static void iapp_send_add(struct iapp_data *iapp, u8 *mac_addr, u16 seq_num)
-{
-	char buf[128];
-	struct iapp_hdr *hdr;
-	struct iapp_add_notify *add;
-	struct sockaddr_in addr;
-
-	/* Send IAPP ADD-notify to remove possible association from other APs
-	 */
-
-	hdr = (struct iapp_hdr *) buf;
-	hdr->version = IAPP_VERSION;
-	hdr->command = IAPP_CMD_ADD_notify;
-	hdr->identifier = host_to_be16(iapp->identifier++);
-	hdr->length = host_to_be16(sizeof(*hdr) + sizeof(*add));
-
-	add = (struct iapp_add_notify *) (hdr + 1);
-	add->addr_len = ETH_ALEN;
-	add->reserved = 0;
-	os_memcpy(add->mac_addr, mac_addr, ETH_ALEN);
-
-	add->seq_num = host_to_be16(seq_num);
-	
-	os_memset(&addr, 0, sizeof(addr));
-	addr.sin_family = AF_INET;
-	addr.sin_addr.s_addr = iapp->multicast.s_addr;
-	addr.sin_port = htons(IAPP_UDP_PORT);
-	if (sendto(iapp->udp_sock, buf, (char *) (add + 1) - buf, 0,
-		   (struct sockaddr *) &addr, sizeof(addr)) < 0)
-		wpa_printf(MSG_INFO, "sendto[IAPP-ADD]: %s", strerror(errno));
-}
-
-
-static void iapp_send_layer2_update(struct iapp_data *iapp, u8 *addr)
-{
-	struct iapp_layer2_update msg;
-
-	/* Send Level 2 Update Frame to update forwarding tables in layer 2
-	 * bridge devices */
-
-	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
-	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
-
-	os_memset(msg.da, 0xff, ETH_ALEN);
-	os_memcpy(msg.sa, addr, ETH_ALEN);
-	msg.len = host_to_be16(6);
-	msg.dsap = 0; /* NULL DSAP address */
-	msg.ssap = 0x01; /* NULL SSAP address, CR Bit: Response */
-	msg.control = 0xaf; /* XID response lsb.1111F101.
-			     * F=0 (no poll command; unsolicited frame) */
-	msg.xid_info[0] = 0x81; /* XID format identifier */
-	msg.xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
-	msg.xid_info[2] = 1 << 1; /* XID sender's receive window size (RW)
-				   * FIX: what is correct RW with 802.11? */
-
-	if (send(iapp->packet_sock, &msg, sizeof(msg), 0) < 0)
-		wpa_printf(MSG_INFO, "send[L2 Update]: %s", strerror(errno));
-}
-
-
-/**
- * iapp_new_station - IAPP processing for a new STA
- * @iapp: IAPP data
- * @sta: The associated station
- */
-void iapp_new_station(struct iapp_data *iapp, struct sta_info *sta)
-{
-	u16 seq = 0; /* TODO */
-
-	if (iapp == NULL)
-		return;
-
-	/* IAPP-ADD.request(MAC Address, Sequence Number, Timeout) */
-	hostapd_logger(iapp->hapd, sta->addr, HOSTAPD_MODULE_IAPP,
-		       HOSTAPD_LEVEL_DEBUG, "IAPP-ADD.request(seq=%d)", seq);
-	iapp_send_layer2_update(iapp, sta->addr);
-	iapp_send_add(iapp, sta->addr, seq);
-
-	/* TODO: If this was reassociation:
-	 * IAPP-MOVE.request(MAC Address, Sequence Number, Old AP,
-	 *                   Context Block, Timeout)
-	 * TODO: Send IAPP-MOVE to the old AP; Map Old AP BSSID to
-	 * IP address */
-}
-
-
-static void iapp_process_add_notify(struct iapp_data *iapp,
-				    struct sockaddr_in *from,
-				    struct iapp_hdr *hdr, int len)
-{
-	struct iapp_add_notify *add = (struct iapp_add_notify *) (hdr + 1);
-	struct sta_info *sta;
-
-	if (len != sizeof(*add)) {
-		wpa_printf(MSG_INFO, "Invalid IAPP-ADD packet length %d (expected %lu)",
-			   len, (unsigned long) sizeof(*add));
-		return;
-	}
-
-	sta = ap_get_sta(iapp->hapd, add->mac_addr);
-
-	/* IAPP-ADD.indication(MAC Address, Sequence Number) */
-	hostapd_logger(iapp->hapd, add->mac_addr, HOSTAPD_MODULE_IAPP,
-		       HOSTAPD_LEVEL_INFO,
-		       "Received IAPP ADD-notify (seq# %d) from %s:%d%s",
-		       be_to_host16(add->seq_num),
-		       inet_ntoa(from->sin_addr), ntohs(from->sin_port),
-		       sta ? "" : " (STA not found)");
-
-	if (!sta)
-		return;
-
-	/* TODO: could use seq_num to try to determine whether last association
-	 * to this AP is newer than the one advertised in IAPP-ADD. Although,
-	 * this is not really a reliable verification. */
-
-	hostapd_logger(iapp->hapd, add->mac_addr, HOSTAPD_MODULE_IAPP,
-		       HOSTAPD_LEVEL_DEBUG,
-		       "Removing STA due to IAPP ADD-notify");
-	ap_sta_disconnect(iapp->hapd, sta, NULL, 0);
-}
-
-
-/**
- * iapp_receive_udp - Process IAPP UDP frames
- * @sock: File descriptor for the socket
- * @eloop_ctx: IAPP data (struct iapp_data *)
- * @sock_ctx: Not used
- */
-static void iapp_receive_udp(int sock, void *eloop_ctx, void *sock_ctx)
-{
-	struct iapp_data *iapp = eloop_ctx;
-	int len, hlen;
-	unsigned char buf[128];
-	struct sockaddr_in from;
-	socklen_t fromlen;
-	struct iapp_hdr *hdr;
-
-	/* Handle incoming IAPP frames (over UDP/IP) */
-
-	fromlen = sizeof(from);
-	len = recvfrom(iapp->udp_sock, buf, sizeof(buf), 0,
-		       (struct sockaddr *) &from, &fromlen);
-	if (len < 0) {
-		wpa_printf(MSG_INFO, "iapp_receive_udp - recvfrom: %s",
-			   strerror(errno));
-		return;
-	}
-
-	if (from.sin_addr.s_addr == iapp->own.s_addr)
-		return; /* ignore own IAPP messages */
-
-	hostapd_logger(iapp->hapd, NULL, HOSTAPD_MODULE_IAPP,
-		       HOSTAPD_LEVEL_DEBUG,
-		       "Received %d byte IAPP frame from %s%s\n",
-		       len, inet_ntoa(from.sin_addr),
-		       len < (int) sizeof(*hdr) ? " (too short)" : "");
-
-	if (len < (int) sizeof(*hdr))
-		return;
-
-	hdr = (struct iapp_hdr *) buf;
-	hlen = be_to_host16(hdr->length);
-	hostapd_logger(iapp->hapd, NULL, HOSTAPD_MODULE_IAPP,
-		       HOSTAPD_LEVEL_DEBUG,
-		       "RX: version=%d command=%d id=%d len=%d\n",
-		       hdr->version, hdr->command,
-		       be_to_host16(hdr->identifier), hlen);
-	if (hdr->version != IAPP_VERSION) {
-		wpa_printf(MSG_INFO, "Dropping IAPP frame with unknown version %d",
-			   hdr->version);
-		return;
-	}
-	if (hlen > len) {
-		wpa_printf(MSG_INFO, "Underflow IAPP frame (hlen=%d len=%d)",
-			   hlen, len);
-		return;
-	}
-	if (hlen < len) {
-		wpa_printf(MSG_INFO, "Ignoring %d extra bytes from IAPP frame",
-			   len - hlen);
-		len = hlen;
-	}
-
-	switch (hdr->command) {
-	case IAPP_CMD_ADD_notify:
-		iapp_process_add_notify(iapp, &from, hdr, len - sizeof(*hdr));
-		break;
-	case IAPP_CMD_MOVE_notify:
-		/* TODO: MOVE is using TCP; so move this to TCP handler once it
-		 * is implemented.. */
-		/* IAPP-MOVE.indication(MAC Address, New BSSID,
-		 * Sequence Number, AP Address, Context Block) */
-		/* TODO: process */
-		break;
-	default:
-		wpa_printf(MSG_INFO, "Unknown IAPP command %d", hdr->command);
-		break;
-	}
-}
-
-
-struct iapp_data * iapp_init(struct hostapd_data *hapd, const char *iface)
-{
-	struct ifreq ifr;
-	struct sockaddr_ll addr;
-	int ifindex;
-	struct sockaddr_in *paddr, uaddr;
-	struct iapp_data *iapp;
-	struct ip_mreqn mreq;
-	int reuseaddr = 1;
-
-	iapp = os_zalloc(sizeof(*iapp));
-	if (iapp == NULL)
-		return NULL;
-	iapp->hapd = hapd;
-	iapp->udp_sock = iapp->packet_sock = -1;
-
-	/* TODO:
-	 * open socket for sending and receiving IAPP frames over TCP
-	 */
-
-	iapp->udp_sock = socket(PF_INET, SOCK_DGRAM, 0);
-	if (iapp->udp_sock < 0) {
-		wpa_printf(MSG_INFO, "iapp_init - socket[PF_INET,SOCK_DGRAM]: %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	os_memset(&ifr, 0, sizeof(ifr));
-	os_strlcpy(ifr.ifr_name, iface, sizeof(ifr.ifr_name));
-	if (ioctl(iapp->udp_sock, SIOCGIFINDEX, &ifr) != 0) {
-		wpa_printf(MSG_INFO, "iapp_init - ioctl(SIOCGIFINDEX): %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-	ifindex = ifr.ifr_ifindex;
-
-	if (ioctl(iapp->udp_sock, SIOCGIFADDR, &ifr) != 0) {
-		wpa_printf(MSG_INFO, "iapp_init - ioctl(SIOCGIFADDR): %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-	paddr = (struct sockaddr_in *) &ifr.ifr_addr;
-	if (paddr->sin_family != AF_INET) {
-		wpa_printf(MSG_INFO, "IAPP: Invalid address family %i (SIOCGIFADDR)",
-			   paddr->sin_family);
-		iapp_deinit(iapp);
-		return NULL;
-	}
-	iapp->own.s_addr = paddr->sin_addr.s_addr;
-
-	if (ioctl(iapp->udp_sock, SIOCGIFBRDADDR, &ifr) != 0) {
-		wpa_printf(MSG_INFO, "iapp_init - ioctl(SIOCGIFBRDADDR): %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-	paddr = (struct sockaddr_in *) &ifr.ifr_addr;
-	if (paddr->sin_family != AF_INET) {
-		wpa_printf(MSG_INFO, "Invalid address family %i (SIOCGIFBRDADDR)",
-			   paddr->sin_family);
-		iapp_deinit(iapp);
-		return NULL;
-	}
-	inet_aton(IAPP_MULTICAST, &iapp->multicast);
-
-	os_memset(&uaddr, 0, sizeof(uaddr));
-	uaddr.sin_family = AF_INET;
-	uaddr.sin_port = htons(IAPP_UDP_PORT);
-
-	if (setsockopt(iapp->udp_sock, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
-		       sizeof(reuseaddr)) < 0) {
-		wpa_printf(MSG_INFO,
-			   "iapp_init - setsockopt[UDP,SO_REUSEADDR]: %s",
-			   strerror(errno));
-		/*
-		 * Ignore this and try to continue. This is fine for single
-		 * BSS cases, but may fail if multiple BSSes enable IAPP.
-		 */
-	}
-
-	if (bind(iapp->udp_sock, (struct sockaddr *) &uaddr,
-		 sizeof(uaddr)) < 0) {
-		wpa_printf(MSG_INFO, "iapp_init - bind[UDP]: %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	os_memset(&mreq, 0, sizeof(mreq));
-	mreq.imr_multiaddr = iapp->multicast;
-	mreq.imr_address.s_addr = INADDR_ANY;
-	mreq.imr_ifindex = 0;
-	if (setsockopt(iapp->udp_sock, SOL_IP, IP_ADD_MEMBERSHIP, &mreq,
-		       sizeof(mreq)) < 0) {
-		wpa_printf(MSG_INFO, "iapp_init - setsockopt[UDP,IP_ADD_MEMBERSHIP]: %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	iapp->packet_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
-	if (iapp->packet_sock < 0) {
-		wpa_printf(MSG_INFO, "iapp_init - socket[PF_PACKET,SOCK_RAW]: %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	os_memset(&addr, 0, sizeof(addr));
-	addr.sll_family = AF_PACKET;
-	addr.sll_ifindex = ifindex;
-	if (bind(iapp->packet_sock, (struct sockaddr *) &addr,
-		 sizeof(addr)) < 0) {
-		wpa_printf(MSG_INFO, "iapp_init - bind[PACKET]: %s",
-			   strerror(errno));
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	if (eloop_register_read_sock(iapp->udp_sock, iapp_receive_udp,
-				     iapp, NULL)) {
-		wpa_printf(MSG_INFO, "Could not register read socket for IAPP");
-		iapp_deinit(iapp);
-		return NULL;
-	}
-
-	wpa_printf(MSG_INFO, "IEEE 802.11F (IAPP) using interface %s", iface);
-
-	/* TODO: For levels 2 and 3: send RADIUS Initiate-Request, receive
-	 * RADIUS Initiate-Accept or Initiate-Reject. IAPP port should actually
-	 * be openned only after receiving Initiate-Accept. If Initiate-Reject
-	 * is received, IAPP is not started. */
-
-	return iapp;
-}
-
-
-void iapp_deinit(struct iapp_data *iapp)
-{
-	struct ip_mreqn mreq;
-
-	if (iapp == NULL)
-		return;
-
-	if (iapp->udp_sock >= 0) {
-		os_memset(&mreq, 0, sizeof(mreq));
-		mreq.imr_multiaddr = iapp->multicast;
-		mreq.imr_address.s_addr = INADDR_ANY;
-		mreq.imr_ifindex = 0;
-		if (setsockopt(iapp->udp_sock, SOL_IP, IP_DROP_MEMBERSHIP,
-			       &mreq, sizeof(mreq)) < 0) {
-			wpa_printf(MSG_INFO, "iapp_deinit - setsockopt[UDP,IP_DEL_MEMBERSHIP]: %s",
-				   strerror(errno));
-		}
-
-		eloop_unregister_read_sock(iapp->udp_sock);
-		close(iapp->udp_sock);
-	}
-	if (iapp->packet_sock >= 0) {
-		eloop_unregister_read_sock(iapp->packet_sock);
-		close(iapp->packet_sock);
-	}
-	os_free(iapp);
-}
diff --git a/src/ap/iapp.h b/src/ap/iapp.h
deleted file mode 100644
index c22118342..000000000
--- a/src/ap/iapp.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * hostapd / IEEE 802.11F-2003 Inter-Access Point Protocol (IAPP)
- * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#ifndef IAPP_H
-#define IAPP_H
-
-struct iapp_data;
-
-#ifdef CONFIG_IAPP
-
-void iapp_new_station(struct iapp_data *iapp, struct sta_info *sta);
-struct iapp_data * iapp_init(struct hostapd_data *hapd, const char *iface);
-void iapp_deinit(struct iapp_data *iapp);
-
-#else /* CONFIG_IAPP */
-
-static inline void iapp_new_station(struct iapp_data *iapp,
-				    struct sta_info *sta)
-{
-}
-
-static inline struct iapp_data * iapp_init(struct hostapd_data *hapd,
-					   const char *iface)
-{
-	return NULL;
-}
-
-static inline void iapp_deinit(struct iapp_data *iapp)
-{
-}
-
-#endif /* CONFIG_IAPP */
-
-#endif /* IAPP_H */
diff --git a/src/utils/wpa_debug.h b/src/utils/wpa_debug.h
index 1fe0b7db7..c94c4391f 100644
--- a/src/utils/wpa_debug.h
+++ b/src/utils/wpa_debug.h
@@ -305,7 +305,6 @@ void hostapd_logger_register_cb(hostapd_logger_cb_func func);
 #define HOSTAPD_MODULE_RADIUS		0x00000004
 #define HOSTAPD_MODULE_WPA		0x00000008
 #define HOSTAPD_MODULE_DRIVER		0x00000010
-#define HOSTAPD_MODULE_IAPP		0x00000020
 #define HOSTAPD_MODULE_MLME		0x00000040
 
 enum hostapd_logger_level {
diff --git a/tests/build/build-hostapd-internal.config b/tests/build/build-hostapd-internal.config
index ca0216b77..33a2f5bd2 100644
--- a/tests/build/build-hostapd-internal.config
+++ b/tests/build/build-hostapd-internal.config
@@ -80,7 +80,6 @@ CONFIG_MBO=y
 CONFIG_CODE_COVERAGE=y
 CFLAGS += -O0 -Wsign-compare
 
-CONFIG_IAPP=y
 CONFIG_TAXONOMY=y
 #CONFIG_FILS=y
 #CONFIG_FILS_SK_PFS=y
diff --git a/tests/hwsim/example-hostapd.config b/tests/hwsim/example-hostapd.config
index 709e64957..d93c4d252 100644
--- a/tests/hwsim/example-hostapd.config
+++ b/tests/hwsim/example-hostapd.config
@@ -105,7 +105,6 @@ CONFIG_SUITEB=y
 #LIBS_c += -fsanitize=undefined
 CONFIG_MBO=y
 
-CONFIG_IAPP=y
 CONFIG_TAXONOMY=y
 CONFIG_FILS=y
 CONFIG_FILS_SK_PFS=y