diff -urN orig/sctp_asconf.c new/sctp_asconf.c
--- orig/sctp_asconf.c	Tue Apr 20 13:57:47 2004
+++ new/sctp_asconf.c	Tue Apr 20 13:58:13 2004
@@ -326,7 +326,7 @@
 		/* IPv6 not enabled! */
 		/* FIX ME: currently sends back an invalid param error */
 		m_reply = sctp_asconf_error_response(aph->correlation_id,
-		    SCTP_ERROR_INVALID_PARAM, (uint8_t)aph, aparam_length);
+		    SCTP_ERROR_INVALID_PARAM, (uint8_t *)aph, aparam_length);
 #ifdef SCTP_DEBUG
 		if (sctp_debug_on & SCTP_DEBUG_ASCONF1) {
 			printf("process_asconf_add_ip: v6 disabled- skipping ");
diff -urN orig/sctp_timer.c new/sctp_timer.c
--- orig/sctp_timer.c	Tue Apr 20 13:57:47 2004
+++ new/sctp_timer.c	Tue Apr 20 21:20:41 2004
@@ -114,7 +114,9 @@
 
 #include <netinet/sctp_timer.h>
 #include <netinet/sctputil.h>
+#ifdef INET6
 #include <netinet6/sctp6_var.h>
+#endif
 #include <netinet/sctp_var.h>
 #include <netinet/sctp_output.h>
 #include <netinet/sctp_hashdriver.h>
diff -urN orig/sctp_var.h new/sctp_var.h
--- orig/sctp_var.h	Tue Apr 20 13:57:47 2004
+++ new/sctp_var.h	Tue Apr 20 13:58:44 2004
@@ -109,8 +109,9 @@
 
 int sctp_usr_recvd __P((struct socket *, int));
 
-
+#if defined(INET6)
 void ip_2_ip6_hdr __P((struct ip6_hdr *, struct ip *));
+#endif
 
 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
 	int, int, struct proc *);
diff -urN orig/sctputil.c new/sctputil.c
--- orig/sctputil.c	Tue Apr 20 22:30:33 2004
+++ new/sctputil.c	Tue Apr 20 21:22:10 2004
@@ -130,7 +130,9 @@
 
 #include <netinet/sctputil.h>
 #include <netinet/sctp_var.h>
+#ifdef INET6
 #include <netinet6/sctp6_var.h>
+#endif
 #include <netinet/sctp_header.h>
 #include <netinet/sctp_output.h>
 #include <netinet/sctp_hashdriver.h>