diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 3512e25..d60e1ba 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -38,10 +38,10 @@ void bat_ogm_init(struct hard_iface *hard_iface)
 	hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
 
 	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
-	batman_ogm_packet->packet_type = BAT_OGM;
-	batman_ogm_packet->version = COMPAT_VERSION;
+	batman_ogm_packet->header.packet_type = BAT_OGM;
+	batman_ogm_packet->header.version = COMPAT_VERSION;
+	batman_ogm_packet->header.ttl = 2;
 	batman_ogm_packet->flags = NO_FLAGS;
-	batman_ogm_packet->ttl = 2;
 	batman_ogm_packet->tq = TQ_MAX_VALUE;
 	batman_ogm_packet->tt_num_changes = 0;
 	batman_ogm_packet->ttvn = 0;
@@ -53,7 +53,7 @@ void bat_ogm_init_primary(struct hard_iface *hard_iface)
 
 	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
 	batman_ogm_packet->flags = PRIMARIES_FIRST_HOP;
-	batman_ogm_packet->ttl = TTL;
+	batman_ogm_packet->header.ttl = TTL;
 }
 
 void bat_ogm_update_mac(struct hard_iface *hard_iface)
@@ -137,7 +137,7 @@ static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
 			fwd_str, (packet_num > 0 ? "aggregated " : ""),
 			batman_ogm_packet->orig,
 			ntohl(batman_ogm_packet->seqno),
-			batman_ogm_packet->tq, batman_ogm_packet->ttl,
+			batman_ogm_packet->tq, batman_ogm_packet->header.ttl,
 			(batman_ogm_packet->flags & DIRECTLINK ?
 			 "on" : "off"),
 			batman_ogm_packet->ttvn, hard_iface->net_dev->name,
@@ -188,7 +188,7 @@ void bat_ogm_emit(struct forw_packet *forw_packet)
 
 	/* multihomed peer assumed */
 	/* non-primary OGMs are only broadcasted on their interface */
-	if ((directlink && (batman_ogm_packet->ttl == 1)) ||
+	if ((directlink && (batman_ogm_packet->header.ttl == 1)) ||
 	    (forw_packet->own && (forw_packet->if_incoming != primary_if))) {
 
 		/* FIXME: what about aggregated packets ? */
@@ -198,7 +198,7 @@ void bat_ogm_emit(struct forw_packet *forw_packet)
 			(forw_packet->own ? "Sending own" : "Forwarding"),
 			batman_ogm_packet->orig,
 			ntohl(batman_ogm_packet->seqno),
-			batman_ogm_packet->ttl,
+			batman_ogm_packet->header.ttl,
 			forw_packet->if_incoming->net_dev->name,
 			forw_packet->if_incoming->net_dev->dev_addr);
 
@@ -272,7 +272,7 @@ static bool bat_ogm_can_aggregate(const struct batman_ogm_packet
 		 * are flooded through the net  */
 		if ((!directlink) &&
 		    (!(batman_ogm_packet->flags & DIRECTLINK)) &&
-		    (batman_ogm_packet->ttl != 1) &&
+		    (batman_ogm_packet->header.ttl != 1) &&
 
 		    /* own packets originating non-primary
 		     * interfaces leave only that interface */
@@ -285,7 +285,7 @@ static bool bat_ogm_can_aggregate(const struct batman_ogm_packet
 		/* if the incoming packet is sent via this one
 		 * interface only - we still can aggregate */
 		if ((directlink) &&
-		    (new_batman_ogm_packet->ttl == 1) &&
+		    (new_batman_ogm_packet->header.ttl == 1) &&
 		    (forw_packet->if_incoming == if_incoming) &&
 
 		    /* packets from direct neighbors or
@@ -471,7 +471,7 @@ static void bat_ogm_forward(struct orig_node *orig_node,
 	uint8_t in_tq, in_ttl, tq_avg = 0;
 	uint8_t tt_num_changes;
 
-	if (batman_ogm_packet->ttl <= 1) {
+	if (batman_ogm_packet->header.ttl <= 1) {
 		bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
 		return;
 	}
@@ -479,10 +479,10 @@ static void bat_ogm_forward(struct orig_node *orig_node,
 	router = orig_node_get_router(orig_node);
 
 	in_tq = batman_ogm_packet->tq;
-	in_ttl = batman_ogm_packet->ttl;
+	in_ttl = batman_ogm_packet->header.ttl;
 	tt_num_changes = batman_ogm_packet->tt_num_changes;
 
-	batman_ogm_packet->ttl--;
+	batman_ogm_packet->header.ttl--;
 	memcpy(batman_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
 
 	/* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
@@ -494,7 +494,8 @@ static void bat_ogm_forward(struct orig_node *orig_node,
 			batman_ogm_packet->tq = router->tq_avg;
 
 			if (router->last_ttl)
-				batman_ogm_packet->ttl = router->last_ttl - 1;
+				batman_ogm_packet->header.ttl =
+					router->last_ttl - 1;
 		}
 
 		tq_avg = router->tq_avg;
@@ -510,7 +511,7 @@ static void bat_ogm_forward(struct orig_node *orig_node,
 		"Forwarding packet: tq_orig: %i, tq_avg: %i, "
 		"tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
 		in_tq, tq_avg, batman_ogm_packet->tq, in_ttl - 1,
-		batman_ogm_packet->ttl);
+		batman_ogm_packet->header.ttl);
 
 	batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno);
 	batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);
@@ -642,8 +643,8 @@ static void bat_ogm_orig_update(struct bat_priv *bat_priv,
 	spin_unlock_bh(&neigh_node->tq_lock);
 
 	if (!is_duplicate) {
-		orig_node->last_ttl = batman_ogm_packet->ttl;
-		neigh_node->last_ttl = batman_ogm_packet->ttl;
+		orig_node->last_ttl = batman_ogm_packet->header.ttl;
+		neigh_node->last_ttl = batman_ogm_packet->header.ttl;
 	}
 
 	bonding_candidate_add(orig_node, neigh_node);
@@ -683,7 +684,7 @@ update_tt:
 	/* I have to check for transtable changes only if the OGM has been
 	 * sent through a primary interface */
 	if (((batman_ogm_packet->orig != ethhdr->h_source) &&
-	     (batman_ogm_packet->ttl > 2)) ||
+	     (batman_ogm_packet->header.ttl > 2)) ||
 	    (batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
 		tt_update_orig(bat_priv, orig_node, tt_buff,
 			       batman_ogm_packet->tt_num_changes,
@@ -918,7 +919,7 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
 	 * packet in an aggregation.  Here we expect that the padding
 	 * is always zero (or not 0x01)
 	 */
-	if (batman_ogm_packet->packet_type != BAT_OGM)
+	if (batman_ogm_packet->header.packet_type != BAT_OGM)
 		return;
 
 	/* could be changed by schedule_own_packet() */
@@ -938,8 +939,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
 		batman_ogm_packet->prev_sender, batman_ogm_packet->seqno,
 		batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc,
 		batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq,
-		batman_ogm_packet->ttl, batman_ogm_packet->version,
-		has_directlink_flag);
+		batman_ogm_packet->header.ttl,
+		batman_ogm_packet->header.version, has_directlink_flag);
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
@@ -966,10 +967,10 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
 	}
 	rcu_read_unlock();
 
-	if (batman_ogm_packet->version != COMPAT_VERSION) {
+	if (batman_ogm_packet->header.version != COMPAT_VERSION) {
 		bat_dbg(DBG_BATMAN, bat_priv,
 			"Drop packet: incompatible batman version (%i)\n",
-			batman_ogm_packet->version);
+			batman_ogm_packet->header.version);
 		return;
 	}
 
@@ -1091,7 +1092,7 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
 	if (is_bidirectional &&
 	    (!is_duplicate ||
 	     ((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&
-	      (orig_node->last_ttl - 3 <= batman_ogm_packet->ttl))))
+	      (orig_node->last_ttl - 3 <= batman_ogm_packet->header.ttl))))
 		bat_ogm_orig_update(bat_priv, orig_node, ethhdr,
 				    batman_ogm_packet, if_incoming,
 				    tt_buff, is_duplicate);
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 7704df4..d3e0e32 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -590,17 +590,17 @@ static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
 
 	batman_ogm_packet = (struct batman_ogm_packet *)skb->data;
 
-	if (batman_ogm_packet->version != COMPAT_VERSION) {
+	if (batman_ogm_packet->header.version != COMPAT_VERSION) {
 		bat_dbg(DBG_BATMAN, bat_priv,
 			"Drop packet: incompatible batman version (%i)\n",
-			batman_ogm_packet->version);
+			batman_ogm_packet->header.version);
 		goto err_free;
 	}
 
 	/* all receive handlers return whether they received or reused
 	 * the supplied skb. if not, we have to free the skb. */
 
-	switch (batman_ogm_packet->packet_type) {
+	switch (batman_ogm_packet->header.packet_type) {
 		/* batman originator packet */
 	case BAT_OGM:
 		ret = recv_bat_ogm_packet(skb, hard_iface);
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index d9c1e7b..5d69e10 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -191,7 +191,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
 		goto free_skb;
 	}
 
-	if (icmp_packet->packet_type != BAT_ICMP) {
+	if (icmp_packet->header.packet_type != BAT_ICMP) {
 		bat_dbg(DBG_BATMAN, bat_priv,
 			"Error - can't send packet from char device: "
 			"got bogus packet type (expected: BAT_ICMP)\n");
@@ -209,9 +209,9 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
 
 	icmp_packet->uid = socket_client->index;
 
-	if (icmp_packet->version != COMPAT_VERSION) {
+	if (icmp_packet->header.version != COMPAT_VERSION) {
 		icmp_packet->msg_type = PARAMETER_PROBLEM;
-		icmp_packet->version = COMPAT_VERSION;
+		icmp_packet->header.version = COMPAT_VERSION;
 		bat_socket_add_packet(socket_client, icmp_packet, packet_len);
 		goto free_skb;
 	}
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 4d9e54c..88c717b 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -90,10 +90,14 @@ enum tt_client_flags {
 	TT_CLIENT_PENDING = 1 << 10
 };
 
-struct batman_ogm_packet {
+struct batman_header {
 	uint8_t  packet_type;
 	uint8_t  version;  /* batman version field */
 	uint8_t  ttl;
+} __packed;
+
+struct batman_ogm_packet {
+	struct batman_header header;
 	uint8_t  flags;    /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
 	uint32_t seqno;
 	uint8_t  orig[6];
@@ -108,9 +112,7 @@ struct batman_ogm_packet {
 #define BATMAN_OGM_LEN sizeof(struct batman_ogm_packet)
 
 struct icmp_packet {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  msg_type; /* see ICMP message types above */
 	uint8_t  dst[6];
 	uint8_t  orig[6];
@@ -124,9 +126,7 @@ struct icmp_packet {
 /* icmp_packet_rr must start with all fields from imcp_packet
  * as this is assumed by code that handles ICMP packets */
 struct icmp_packet_rr {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  msg_type; /* see ICMP message types above */
 	uint8_t  dst[6];
 	uint8_t  orig[6];
@@ -137,17 +137,13 @@ struct icmp_packet_rr {
 } __packed;
 
 struct unicast_packet {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  ttvn; /* destination translation table version number */
 	uint8_t  dest[6];
 } __packed;
 
 struct unicast_frag_packet {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  ttvn; /* destination translation table version number */
 	uint8_t  dest[6];
 	uint8_t  flags;
@@ -157,18 +153,14 @@ struct unicast_frag_packet {
 } __packed;
 
 struct bcast_packet {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  reserved;
 	uint32_t seqno;
 	uint8_t  orig[6];
 } __packed;
 
 struct vis_packet {
-	uint8_t  packet_type;
-	uint8_t  version;        /* batman version field */
-	uint8_t  ttl;		 /* TTL */
+	struct batman_header header;
 	uint8_t  vis_type;	 /* which type of vis-participant sent this? */
 	uint32_t seqno;		 /* sequence number */
 	uint8_t  entries;	 /* number of entries behind this struct */
@@ -179,9 +171,7 @@ struct vis_packet {
 } __packed;
 
 struct tt_query_packet {
-	uint8_t  packet_type;
-	uint8_t  version;  /* batman version field */
-	uint8_t  ttl;
+	struct batman_header header;
 	/* the flag field is a combination of:
 	 * - TT_REQUEST or TT_RESPONSE
 	 * - TT_FULL_TABLE */
@@ -202,9 +192,7 @@ struct tt_query_packet {
 } __packed;
 
 struct roam_adv_packet {
-	uint8_t  packet_type;
-	uint8_t  version;
-	uint8_t  ttl;
+	struct batman_header header;
 	uint8_t  reserved;
 	uint8_t  dst[ETH_ALEN];
 	uint8_t  src[ETH_ALEN];
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 773e606..4363d19 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -320,7 +320,7 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv,
 	memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
 	memcpy(icmp_packet->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
 	icmp_packet->msg_type = ECHO_REPLY;
-	icmp_packet->ttl = TTL;
+	icmp_packet->header.ttl = TTL;
 
 	send_skb_packet(skb, router->if_incoming, router->addr);
 	ret = NET_RX_SUCCESS;
@@ -376,7 +376,7 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
 	memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
 	memcpy(icmp_packet->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
 	icmp_packet->msg_type = TTL_EXCEEDED;
-	icmp_packet->ttl = TTL;
+	icmp_packet->header.ttl = TTL;
 
 	send_skb_packet(skb, router->if_incoming, router->addr);
 	ret = NET_RX_SUCCESS;
@@ -441,7 +441,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 		return recv_my_icmp_packet(bat_priv, skb, hdr_size);
 
 	/* TTL exceeded */
-	if (icmp_packet->ttl < 2)
+	if (icmp_packet->header.ttl < 2)
 		return recv_icmp_ttl_exceeded(bat_priv, skb);
 
 	/* get routing information */
@@ -460,7 +460,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 	icmp_packet = (struct icmp_packet_rr *)skb->data;
 
 	/* decrement ttl */
-	icmp_packet->ttl--;
+	icmp_packet->header.ttl--;
 
 	/* route it */
 	send_skb_packet(skb, router->if_incoming, router->addr);
@@ -815,7 +815,7 @@ int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 	unicast_packet = (struct unicast_packet *)skb->data;
 
 	/* TTL exceeded */
-	if (unicast_packet->ttl < 2) {
+	if (unicast_packet->header.ttl < 2) {
 		pr_debug("Warning - can't forward unicast packet from %pM to "
 			 "%pM: ttl exceeded\n", ethhdr->h_source,
 			 unicast_packet->dest);
@@ -840,7 +840,7 @@ int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 
 	unicast_packet = (struct unicast_packet *)skb->data;
 
-	if (unicast_packet->packet_type == BAT_UNICAST &&
+	if (unicast_packet->header.packet_type == BAT_UNICAST &&
 	    atomic_read(&bat_priv->fragmentation) &&
 	    skb->len > neigh_node->if_incoming->net_dev->mtu) {
 		ret = frag_send_skb(skb, bat_priv,
@@ -848,7 +848,7 @@ int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 		goto out;
 	}
 
-	if (unicast_packet->packet_type == BAT_UNICAST_FRAG &&
+	if (unicast_packet->header.packet_type == BAT_UNICAST_FRAG &&
 	    frag_can_reassemble(skb, neigh_node->if_incoming->net_dev->mtu)) {
 
 		ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
@@ -867,7 +867,7 @@ int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 	}
 
 	/* decrement ttl */
-	unicast_packet->ttl--;
+	unicast_packet->header.ttl--;
 
 	/* route it */
 	send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
@@ -1041,7 +1041,7 @@ int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
 	if (is_my_mac(bcast_packet->orig))
 		goto out;
 
-	if (bcast_packet->ttl < 2)
+	if (bcast_packet->header.ttl < 2)
 		goto out;
 
 	orig_node = orig_hash_find(bat_priv, bcast_packet->orig);
diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 8a684eb..b00a0f5 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -234,7 +234,7 @@ int add_bcast_packet_to_list(struct bat_priv *bat_priv,
 
 	/* as we have a copy now, it is safe to decrease the TTL */
 	bcast_packet = (struct bcast_packet *)newskb->data;
-	bcast_packet->ttl--;
+	bcast_packet->header.ttl--;
 
 	skb_reset_mac_header(newskb);
 
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 987c75a..bd8c7cf 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -457,10 +457,10 @@ static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
 		batman_ogm_packet = (struct batman_ogm_packet *)
 							(skb->data + ETH_HLEN);
 
-	if (batman_ogm_packet->version != COMPAT_VERSION)
+	if (batman_ogm_packet->header.version != COMPAT_VERSION)
 		goto out;
 
-	if (batman_ogm_packet->packet_type != BAT_OGM)
+	if (batman_ogm_packet->header.packet_type != BAT_OGM)
 		goto out;
 
 	if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
@@ -632,11 +632,11 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
 			goto dropped;
 
 		bcast_packet = (struct bcast_packet *)skb->data;
-		bcast_packet->version = COMPAT_VERSION;
-		bcast_packet->ttl = TTL;
+		bcast_packet->header.version = COMPAT_VERSION;
+		bcast_packet->header.ttl = TTL;
 
 		/* batman packet type: broadcast */
-		bcast_packet->packet_type = BAT_BCAST;
+		bcast_packet->header.packet_type = BAT_BCAST;
 
 		/* hw address of first interface is the orig mac because only
 		 * this mac is known throughout the mesh */
@@ -725,8 +725,8 @@ void interface_rx(struct net_device *soft_iface,
 		skb_push(skb, hdr_size);
 		unicast_packet = (struct unicast_packet *)skb->data;
 
-		if ((unicast_packet->packet_type != BAT_UNICAST) &&
-		    (unicast_packet->packet_type != BAT_UNICAST_FRAG))
+		if ((unicast_packet->header.packet_type != BAT_UNICAST) &&
+		    (unicast_packet->header.packet_type != BAT_UNICAST_FRAG))
 			goto dropped;
 
 		skb_reset_mac_header(skb);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index c632475..bc518fc 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1135,11 +1135,11 @@ static int send_tt_request(struct bat_priv *bat_priv,
 	tt_request = (struct tt_query_packet *)skb_put(skb,
 				sizeof(struct tt_query_packet));
 
-	tt_request->packet_type = BAT_TT_QUERY;
-	tt_request->version = COMPAT_VERSION;
+	tt_request->header.packet_type = BAT_TT_QUERY;
+	tt_request->header.version = COMPAT_VERSION;
 	memcpy(tt_request->src, primary_if->net_dev->dev_addr, ETH_ALEN);
 	memcpy(tt_request->dst, dst_orig_node->orig, ETH_ALEN);
-	tt_request->ttl = TTL;
+	tt_request->header.ttl = TTL;
 	tt_request->ttvn = ttvn;
 	tt_request->tt_data = tt_crc;
 	tt_request->flags = TT_REQUEST;
@@ -1265,9 +1265,9 @@ static bool send_other_tt_response(struct bat_priv *bat_priv,
 		tt_response = (struct tt_query_packet *)skb->data;
 	}
 
-	tt_response->packet_type = BAT_TT_QUERY;
-	tt_response->version = COMPAT_VERSION;
-	tt_response->ttl = TTL;
+	tt_response->header.packet_type = BAT_TT_QUERY;
+	tt_response->header.version = COMPAT_VERSION;
+	tt_response->header.ttl = TTL;
 	memcpy(tt_response->src, req_dst_orig_node->orig, ETH_ALEN);
 	memcpy(tt_response->dst, tt_request->src, ETH_ALEN);
 	tt_response->flags = TT_RESPONSE;
@@ -1382,9 +1382,9 @@ static bool send_my_tt_response(struct bat_priv *bat_priv,
 		tt_response = (struct tt_query_packet *)skb->data;
 	}
 
-	tt_response->packet_type = BAT_TT_QUERY;
-	tt_response->version = COMPAT_VERSION;
-	tt_response->ttl = TTL;
+	tt_response->header.packet_type = BAT_TT_QUERY;
+	tt_response->header.version = COMPAT_VERSION;
+	tt_response->header.ttl = TTL;
 	memcpy(tt_response->src, primary_if->net_dev->dev_addr, ETH_ALEN);
 	memcpy(tt_response->dst, tt_request->src, ETH_ALEN);
 	tt_response->flags = TT_RESPONSE;
@@ -1671,9 +1671,9 @@ void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client,
 	roam_adv_packet = (struct roam_adv_packet *)skb_put(skb,
 					sizeof(struct roam_adv_packet));
 
-	roam_adv_packet->packet_type = BAT_ROAM_ADV;
-	roam_adv_packet->version = COMPAT_VERSION;
-	roam_adv_packet->ttl = TTL;
+	roam_adv_packet->header.packet_type = BAT_ROAM_ADV;
+	roam_adv_packet->header.version = COMPAT_VERSION;
+	roam_adv_packet->header.ttl = TTL;
 	primary_if = primary_if_get_selected(bat_priv);
 	if (!primary_if)
 		goto out;
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 07d1c1d..6f3c659 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -67,7 +67,7 @@ static struct sk_buff *frag_merge_packet(struct list_head *head,
 
 	memmove(skb->data + uni_diff, skb->data, hdr_len);
 	unicast_packet = (struct unicast_packet *) skb_pull(skb, uni_diff);
-	unicast_packet->packet_type = BAT_UNICAST;
+	unicast_packet->header.packet_type = BAT_UNICAST;
 
 	return skb;
 
@@ -251,9 +251,9 @@ int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
 
 	memcpy(frag1, &tmp_uc, sizeof(tmp_uc));
 
-	frag1->ttl--;
-	frag1->version = COMPAT_VERSION;
-	frag1->packet_type = BAT_UNICAST_FRAG;
+	frag1->header.ttl--;
+	frag1->header.version = COMPAT_VERSION;
+	frag1->header.packet_type = BAT_UNICAST_FRAG;
 
 	memcpy(frag1->orig, primary_if->net_dev->dev_addr, ETH_ALEN);
 	memcpy(frag2, frag1, sizeof(*frag2));
@@ -320,11 +320,11 @@ find_router:
 
 	unicast_packet = (struct unicast_packet *)skb->data;
 
-	unicast_packet->version = COMPAT_VERSION;
+	unicast_packet->header.version = COMPAT_VERSION;
 	/* batman packet type: unicast */
-	unicast_packet->packet_type = BAT_UNICAST;
+	unicast_packet->header.packet_type = BAT_UNICAST;
 	/* set unicast ttl */
-	unicast_packet->ttl = TTL;
+	unicast_packet->header.ttl = TTL;
 	/* copy the destination for faster routing */
 	memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
 	/* set the destination tt version number */
@@ -335,7 +335,7 @@ find_router:
 	    data_len + sizeof(*unicast_packet) >
 				neigh_node->if_incoming->net_dev->mtu) {
 		/* send frag skb decreases ttl */
-		unicast_packet->ttl++;
+		unicast_packet->header.ttl++;
 		ret = frag_send_skb(skb, bat_priv,
 				    neigh_node->if_incoming, neigh_node->addr);
 		goto out;
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index cc3b9f2..ac7e661 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -617,7 +617,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
 	packet->vis_type = atomic_read(&bat_priv->vis_mode);
 
 	memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
-	packet->ttl = TTL;
+	packet->header.ttl = TTL;
 	packet->seqno = htonl(ntohl(packet->seqno) + 1);
 	packet->entries = 0;
 	skb_trim(info->skb_packet, sizeof(*packet));
@@ -818,19 +818,19 @@ static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
 		goto out;
 
 	packet = (struct vis_packet *)info->skb_packet->data;
-	if (packet->ttl < 2) {
+	if (packet->header.ttl < 2) {
 		pr_debug("Error - can't send vis packet: ttl exceeded\n");
 		goto out;
 	}
 
 	memcpy(packet->sender_orig, primary_if->net_dev->dev_addr, ETH_ALEN);
-	packet->ttl--;
+	packet->header.ttl--;
 
 	if (is_broadcast_ether_addr(packet->target_orig))
 		broadcast_vis_packet(bat_priv, info);
 	else
 		unicast_vis_packet(bat_priv, info);
-	packet->ttl++; /* restore TTL */
+	packet->header.ttl++; /* restore TTL */
 
 out:
 	if (primary_if)
@@ -910,9 +910,9 @@ int vis_init(struct bat_priv *bat_priv)
 	INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list);
 	kref_init(&bat_priv->my_vis_info->refcount);
 	bat_priv->my_vis_info->bat_priv = bat_priv;
-	packet->version = COMPAT_VERSION;
-	packet->packet_type = BAT_VIS;
-	packet->ttl = TTL;
+	packet->header.version = COMPAT_VERSION;
+	packet->header.packet_type = BAT_VIS;
+	packet->header.ttl = TTL;
 	packet->seqno = 0;
 	packet->entries = 0;
 
