diff --git a/sys/net/if_gre.c b/sys/net/if_gre.c
index f8165dc942c..4d485010c2c 100644
--- a/sys/net/if_gre.c
+++ b/sys/net/if_gre.c
@@ -123,7 +123,7 @@ static const struct protosw in_gre_protosw = {
 	.pr_domain =		&inetdomain,
 	.pr_protocol =		IPPROTO_GRE,
 	.pr_flags =		PR_ATOMIC|PR_ADDR,
-	.pr_input =		(pr_input_t *)gre_input,
+	.pr_input =		gre_input,
 	.pr_output =		(pr_output_t *)rip_output,
 	.pr_ctlinput =		rip_ctlinput,
 	.pr_ctloutput =		rip_ctloutput,
@@ -134,7 +134,7 @@ static const struct protosw in_mobile_protosw = {
 	.pr_domain =		&inetdomain,
 	.pr_protocol =		IPPROTO_MOBILE,
 	.pr_flags =		PR_ATOMIC|PR_ADDR,
-	.pr_input =		(pr_input_t *)gre_mobile_input,
+	.pr_input =		gre_mobile_input,
 	.pr_output =		(pr_output_t *)rip_output,
 	.pr_ctlinput =		rip_ctlinput,
 	.pr_ctloutput =		rip_ctloutput,
diff --git a/sys/netinet/ip_gre.c b/sys/netinet/ip_gre.c
index 04dc3d932ad..e9a2ace0aee 100644
--- a/sys/netinet/ip_gre.c
+++ b/sys/netinet/ip_gre.c
@@ -104,20 +104,10 @@ static int	gre_input2(struct mbuf *, int, u_char);
  * This really is simple
  */
 void
-#if __STDC__
-gre_input(struct mbuf *m, ...)
-#else
-gre_input(m, va_alist)
-	struct mbuf *m;
-	va_dcl
-#endif
+gre_input(struct mbuf *m, int off)
 {
-	int off, ret, proto;
-	va_list ap;
+	int ret, proto;
 
-	va_start(ap, m);
-	off = va_arg(ap, int);
-	va_end(ap);
 	proto = (mtod(m, struct ip *))->ip_p;
 
 	ret = gre_input2(m, off, proto);
@@ -236,25 +226,13 @@ gre_input2(struct mbuf *m ,int hlen, u_char proto)
  */
 
 void
-#if __STDC__
-gre_mobile_input(struct mbuf *m, ...)
-#else
-gre_mobile_input(m, va_alist)
-	struct mbuf *m;
-	va_dcl
-#endif
+gre_mobile_input(struct mbuf *m, int hlen)
 {
 	struct ip *ip;
 	struct mobip_h *mip;
 	struct gre_softc *sc;
-	int hlen;
-	va_list ap;
 	int msiz;
 
-	va_start(ap, m);
-	hlen = va_arg(ap, int);
-	va_end(ap);
-
 	if ((sc = gre_lookup(m, IPPROTO_MOBILE)) == NULL) {
 		/* No matching tunnel or tunnel is down. */
 		m_freem(m);
diff --git a/sys/netinet/ip_gre.h b/sys/netinet/ip_gre.h
index f997f6609a0..1fb67d93b9c 100644
--- a/sys/netinet/ip_gre.h
+++ b/sys/netinet/ip_gre.h
@@ -38,6 +38,6 @@
  */
 
 #ifdef _KERNEL
-void gre_input(struct mbuf *, ...);
-void gre_mobile_input(struct mbuf *, ...);
+void gre_input(struct mbuf *, int);
+void gre_mobile_input(struct mbuf *, int);
 #endif /* _KERNEL */
diff --git a/sys/netipsec/keysock.c b/sys/netipsec/keysock.c
index daff3c94384..12e458adc40 100644
--- a/sys/netipsec/keysock.c
+++ b/sys/netipsec/keysock.c
@@ -77,23 +77,11 @@ struct pfkeystat pfkeystat;
  * key_output()
  */
 int
-#if __STDC__
-key_output(struct mbuf *m, ...)
-#else
-key_output(m, va_alist)
-	struct mbuf *m;
-	va_dcl
-#endif
+key_output(struct mbuf *m, struct socket *so)
 {
 	struct sadb_msg *msg;
 	int len, error = 0;
 	int s;
-	struct socket *so;
-	va_list ap;
-
-	va_start(ap, m);
-	so = va_arg(ap, struct socket *);
-	va_end(ap);
 
 	if (m == 0)
 		panic("%s: NULL pointer was passed.\n", __func__);
@@ -590,7 +578,7 @@ struct protosw keysw[] = {
 	.pr_domain =		&keydomain,
 	.pr_protocol =		PF_KEY_V2,
 	.pr_flags =		PR_ATOMIC|PR_ADDR,
-	.pr_output =		(pr_output_t *)key_output,
+	.pr_output =		key_output,
 	.pr_ctlinput =		raw_ctlinput,
 	.pr_init =		raw_init,
 	.pr_usrreqs =		&key_usrreqs
diff --git a/sys/netipsec/keysock.h b/sys/netipsec/keysock.h
index d8d27d20107..a331b5e3694 100644
--- a/sys/netipsec/keysock.h
+++ b/sys/netipsec/keysock.h
@@ -71,7 +71,7 @@ struct keycb {
 
 extern struct pfkeystat pfkeystat;
 
-extern int key_output __P((struct mbuf *, ...));
+extern int key_output(struct mbuf *m, struct socket *so);
 extern int key_usrreq __P((struct socket *,
 	int, struct mbuf *, struct mbuf *, struct mbuf *));
 
diff --git a/sys/netkey/keysock.c b/sys/netkey/keysock.c
index a19d977c4b4..6419956ee3b 100644
--- a/sys/netkey/keysock.c
+++ b/sys/netkey/keysock.c
@@ -75,23 +75,11 @@ struct pfkeystat pfkeystat;
  * key_output()
  */
 int
-#if __STDC__
-key_output(struct mbuf *m, ...)
-#else
-key_output(m, va_alist)
-	struct mbuf *m;
-	va_dcl
-#endif
+key_output(struct mbuf *m, struct socket *so)
 {
 	struct sadb_msg *msg;
 	int len, error = 0;
 	int s;
-	struct socket *so;
-	va_list ap;
-
-	va_start(ap, m);
-	so = va_arg(ap, struct socket *);
-	va_end(ap);
 
 	if (m == 0)
 		panic("key_output: NULL pointer was passed.");
@@ -500,7 +488,7 @@ struct protosw keysw[] = {
 	.pr_domain =		&keydomain,
 	.pr_protocol =		PF_KEY_V2,
 	.pr_flags =		PR_ATOMIC|PR_ADDR,
-	.pr_output =		(pr_output_t *)key_output,
+	.pr_output =		key_output,
 	.pr_ctlinput =		raw_ctlinput,
 	.pr_init =		raw_init,
 	.pr_usrreqs =		&key_usrreqs
diff --git a/sys/netkey/keysock.h b/sys/netkey/keysock.h
index ff2db816010..0422517c829 100644
--- a/sys/netkey/keysock.h
+++ b/sys/netkey/keysock.h
@@ -71,7 +71,7 @@ struct keycb {
 
 extern struct pfkeystat pfkeystat;
 
-extern int key_output(struct mbuf *, ...);
+extern int key_output(struct mbuf *m, struct socket *so);
 extern int key_usrreq(struct socket *,
 	int, struct mbuf *, struct mbuf *, struct mbuf *);