diff --git a/UPDATING b/UPDATING
index f31d8f6f378c..99b56a9028cc 100644
--- a/UPDATING
+++ b/UPDATING
@@ -23,6 +23,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW:
 	developers choose to disable these features on build machines
 	to maximize performance.
 
+20040830:
+	A new variable, ifi_epoch, has been added to struct if_data
+	which is part if struct ifnet.  This means all network drivers
+	and network monitoring applications need to be recompiled.
+
 20040828:
 	The default configuration for the network stack has been changed
 	such that it now runs without the Giant lock unless configured
diff --git a/sys/net/if.c b/sys/net/if.c
index 73d661c372b4..0bb5389394a2 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -387,6 +387,7 @@ if_attach(struct ifnet *ifp)
 	TAILQ_INIT(&ifp->if_multiaddrs);
 	knlist_init(&ifp->if_klist, NULL);
 	getmicrotime(&ifp->if_lastchange);
+	getmicrotime(&ifp->if_data.ifi_epoch);
 
 #ifdef MAC
 	mac_init_ifnet(ifp);
diff --git a/sys/net/if.h b/sys/net/if.h
index 084fc9dcb3e1..5a005c97a94d 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -103,6 +103,7 @@ struct if_data {
 	u_long	ifi_hwassist;		/* HW offload capabilities */
 	u_long	ifi_unused;		/* XXX was ifi_xmittiming */
 	struct	timeval ifi_lastchange;	/* time of last administrative change */
+	struct	timeval ifi_epoch;	/* time of creation or stat reset */
 };
 
 #define	IFF_UP		0x1		/* interface is up */
diff --git a/sys/sys/param.h b/sys/sys/param.h
index 047890b75c5e..7fad9e9e9c17 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -57,7 +57,7 @@
  *		is created, otherwise 1.
  */
 #undef __FreeBSD_version
-#define __FreeBSD_version 600001	/* Master, propagated to newvers */
+#define __FreeBSD_version 600002	/* Master, propagated to newvers */
 
 #ifndef LOCORE
 #include <sys/types.h>