--- src/sys/netinet/sctp_input.c	2005/07/15 14:46:16	1.1
+++ src/sys/netinet/sctp_input.c	2005/07/15 15:02:02	1.2
@@ -33,7 +33,7 @@
 #if !(defined(__OpenBSD__) || defined(__APPLE__))
 #include "opt_ipsec.h"
 #endif
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 #include "opt_compat.h"
 #include "opt_inet6.h"
 #include "opt_inet.h"
@@ -4369,7 +4369,7 @@ sctp_input(m, va_alist)
 	/*
 	 * common chunk processing
 	 */
-#if defined(__FreeBSD__)  || defined(__APPLE__)
+#if defined(__FreeBSD__)  || defined(__APPLE__) || defined(__DragonFly__)
 	length = ip->ip_len + iphlen;
 #else
 	length = ip->ip_len - (ip->ip_hl << 2) + iphlen;