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diff --git a/libs/watt32/net/if_strip.h b/libs/watt32/net/if_strip.h
new file mode 100644
index 0000000..01a7ccd
--- /dev/null
+++ b/libs/watt32/net/if_strip.h
@@ -0,0 +1,60 @@
+/*!\file net/if_strip.h
+ * SLIP interface structures.
+ */
+
+/*      $NetBSD: if_stripvar.h,v 1.4.8.1 1997/11/17 23:36:16 thorpej Exp $      */
+
+/*
+ * Definitions for SLIP interface data structures
+ * 
+ * (This exists so programs like slstats can get at the definition
+ *  of sl_softc.)
+ */
+
+#ifndef __NET_IF_STRIP_H
+#define __NET_IF_STRIP_H
+
+struct strip_softc {
+	struct	ifnet sc_if;		/* network-visible interface */
+	int	sc_unit;		/* XXX unit number */
+	struct	ifqueue sc_fastq;	/* interactive output queue */
+	struct	tty *sc_ttyp;		/* pointer to tty structure */
+	u_char	*sc_mp;			/* pointer to next available buf char */
+	u_char	*sc_ep;			/* pointer to last available buf char */
+	u_char	*sc_buf;		/* input buffer */
+	u_char	*sc_rxbuf;		/* input destuffing buffer */
+	u_char	*sc_txbuf;		/* output stuffing buffer */
+	u_char	*sc_xxx;		/* XXX don't ask... */
+	u_int	sc_flags;		/* see below */
+	long	sc_oqlen;		/* previous output queue size */
+	long	sc_otimeout;		/* number of times output's stalled */
+#ifdef __NetBSD__
+	int	sc_oldbufsize;		/* previous output buffer size */
+	int	sc_oldbufquot;		/* previous output buffer quoting */
+#endif
+#ifdef INET				/* XXX */
+	struct	slcompress sc_comp;	/* tcp compression data */
+#endif
+
+	int sc_state;			/* Radio reset state-machine */
+#define ST_ALIVE	0x0		/*    answered  probe */
+#define ST_PROBE_SENT	0x1		/*    probe sent, answer pending */
+#define ST_DEAD		0x2		/*    no answer to probe; do reset */
+
+	long sc_statetimo;		/* When (secs) current state ends */
+
+	caddr_t	sc_bpf;			/* BPF data */
+};
+
+
+/* Internal flags */
+#define	SC_ERROR	0x0001		/* Incurred error reading current pkt*/
+
+#define SC_TIMEOUT	0x00000400	/* timeout is currently pending */
+
+/* visible flags */
+#define	SC_COMPRESS	IFF_LINK0	/* compress TCP traffic */
+#define	SC_NOICMP	IFF_LINK1	/* supress ICMP traffic */
+#define	SC_AUTOCOMP	IFF_LINK2	/* auto-enable TCP compression */
+
+#endif