diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
new file mode 100644
index 0000000..6fafb27
--- /dev/null
+++ b/include/linux/inetdevice.h
@@ -0,0 +1,190 @@
+#ifndef _LINUX_INETDEVICE_H
+#define _LINUX_INETDEVICE_H
+
+#ifdef __KERNEL__
+
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
+#include <linux/timer.h>
+
+struct ipv4_devconf
+{
+	int	accept_redirects;
+	int	send_redirects;
+	int	secure_redirects;
+	int	shared_media;
+	int	accept_source_route;
+	int	rp_filter;
+	int	proxy_arp;
+	int	bootp_relay;
+	int	log_martians;
+	int	forwarding;
+	int	mc_forwarding;
+	int	tag;
+	int     arp_filter;
+	int	arp_announce;
+	int	arp_ignore;
+	int	medium_id;
+	int	no_xfrm;
+	int	no_policy;
+	int	force_igmp_version;
+	void	*sysctl;
+};
+
+extern struct ipv4_devconf ipv4_devconf;
+
+struct in_device
+{
+	struct net_device	*dev;
+	atomic_t		refcnt;
+	int			dead;
+	struct in_ifaddr	*ifa_list;	/* IP ifaddr chain		*/
+	rwlock_t		mc_list_lock;
+	struct ip_mc_list	*mc_list;	/* IP multicast filter chain    */
+	spinlock_t		mc_tomb_lock;
+	struct ip_mc_list	*mc_tomb;
+	unsigned long		mr_v1_seen;
+	unsigned long		mr_v2_seen;
+	unsigned long		mr_maxdelay;
+	unsigned char		mr_qrv;
+	unsigned char		mr_gq_running;
+	unsigned char		mr_ifc_count;
+	struct timer_list	mr_gq_timer;	/* general query timer */
+	struct timer_list	mr_ifc_timer;	/* interface change timer */
+
+	struct neigh_parms	*arp_parms;
+	struct ipv4_devconf	cnf;
+	struct rcu_head		rcu_head;
+};
+
+#define IN_DEV_FORWARD(in_dev)		((in_dev)->cnf.forwarding)
+#define IN_DEV_MFORWARD(in_dev)		(ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
+#define IN_DEV_RPFILTER(in_dev)		(ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
+#define IN_DEV_SOURCE_ROUTE(in_dev)	(ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
+#define IN_DEV_BOOTP_RELAY(in_dev)	(ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
+
+#define IN_DEV_LOG_MARTIANS(in_dev)	(ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
+#define IN_DEV_PROXY_ARP(in_dev)	(ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
+#define IN_DEV_SHARED_MEDIA(in_dev)	(ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
+#define IN_DEV_TX_REDIRECTS(in_dev)	(ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
+#define IN_DEV_SEC_REDIRECTS(in_dev)	(ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
+#define IN_DEV_IDTAG(in_dev)		((in_dev)->cnf.tag)
+#define IN_DEV_MEDIUM_ID(in_dev)	((in_dev)->cnf.medium_id)
+
+#define IN_DEV_RX_REDIRECTS(in_dev) \
+	((IN_DEV_FORWARD(in_dev) && \
+	  (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
+	 || (!IN_DEV_FORWARD(in_dev) && \
+	  (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
+
+#define IN_DEV_ARPFILTER(in_dev)	(ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
+#define IN_DEV_ARP_ANNOUNCE(in_dev)	(max(ipv4_devconf.arp_announce, (in_dev)->cnf.arp_announce))
+#define IN_DEV_ARP_IGNORE(in_dev)	(max(ipv4_devconf.arp_ignore, (in_dev)->cnf.arp_ignore))
+
+struct in_ifaddr
+{
+	struct in_ifaddr	*ifa_next;
+	struct in_device	*ifa_dev;
+	struct rcu_head		rcu_head;
+	u32			ifa_local;
+	u32			ifa_address;
+	u32			ifa_mask;
+	u32			ifa_broadcast;
+	u32			ifa_anycast;
+	unsigned char		ifa_scope;
+	unsigned char		ifa_flags;
+	unsigned char		ifa_prefixlen;
+	char			ifa_label[IFNAMSIZ];
+};
+
+extern int register_inetaddr_notifier(struct notifier_block *nb);
+extern int unregister_inetaddr_notifier(struct notifier_block *nb);
+
+extern struct net_device 	*ip_dev_find(u32 addr);
+extern int		inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
+extern int		devinet_ioctl(unsigned int cmd, void __user *);
+extern void		devinet_init(void);
+extern struct in_device *inetdev_init(struct net_device *dev);
+extern struct in_device	*inetdev_by_index(int);
+extern u32		inet_select_addr(const struct net_device *dev, u32 dst, int scope);
+extern u32		inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scope);
+extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
+extern void		inet_forward_change(void);
+
+static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
+{
+	return !((addr^ifa->ifa_address)&ifa->ifa_mask);
+}
+
+/*
+ *	Check if a mask is acceptable.
+ */
+ 
+static __inline__ int bad_mask(u32 mask, u32 addr)
+{
+	if (addr & (mask = ~mask))
+		return 1;
+	mask = ntohl(mask);
+	if (mask & (mask+1))
+		return 1;
+	return 0;
+}
+
+#define for_primary_ifa(in_dev)	{ struct in_ifaddr *ifa; \
+  for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
+
+#define for_ifa(in_dev)	{ struct in_ifaddr *ifa; \
+  for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
+
+
+#define endfor_ifa(in_dev) }
+
+static __inline__ struct in_device *
+in_dev_get(const struct net_device *dev)
+{
+	struct in_device *in_dev;
+
+	rcu_read_lock();
+	in_dev = dev->ip_ptr;
+	if (in_dev)
+		atomic_inc(&in_dev->refcnt);
+	rcu_read_unlock();
+	return in_dev;
+}
+
+static __inline__ struct in_device *
+__in_dev_get(const struct net_device *dev)
+{
+	return (struct in_device*)dev->ip_ptr;
+}
+
+extern void in_dev_finish_destroy(struct in_device *idev);
+
+static inline void in_dev_put(struct in_device *idev)
+{
+	if (atomic_dec_and_test(&idev->refcnt))
+		in_dev_finish_destroy(idev);
+}
+
+#define __in_dev_put(idev)  atomic_dec(&(idev)->refcnt)
+#define in_dev_hold(idev)   atomic_inc(&(idev)->refcnt)
+
+#endif /* __KERNEL__ */
+
+static __inline__ __u32 inet_make_mask(int logmask)
+{
+	if (logmask)
+		return htonl(~((1<<(32-logmask))-1));
+	return 0;
+}
+
+static __inline__ int inet_mask_len(__u32 mask)
+{
+	if (!(mask = ntohl(mask)))
+		return 0;
+	return 32 - ffz(~mask);
+}
+
+
+#endif /* _LINUX_INETDEVICE_H */