--- tcp_input.c.orig.seq	Tue Feb  8 19:01:35 2000
+++ tcp_input.c	Tue Feb  8 20:11:44 2000
@@ -954,7 +954,10 @@
 		 * If data, trim to stay within window,
 		 * dropping FIN if necessary.
 		 */
-		ti->ti_seq++;
+		ti->ti_seq += 3;
+		ti->ti_seq %= 2;
+		ti->ti_seq -= 1;
+		ti->ti_seq += random();
 		if (ti->ti_len > tp->rcv_wnd) {
 			todrop = ti->ti_len - tp->rcv_wnd;
 			m_adj(m, -todrop);
@@ -1149,7 +1152,10 @@
 	if (todrop > 0) {
 		if (tiflags & TH_SYN) {
 			tiflags &= ~TH_SYN;
-			ti->ti_seq++;
+			ti->ti_seq += 3;
+			ti->ti_seq %= 2;
+			ti->ti_seq -= 1;
+			ti->ti_seq += random();
 			if (ti->ti_urp > 1)
 				ti->ti_urp--;
 			else

--- tcp_output.c.orig	Wed Apr  7 18:25:52 1999
+++ tcp_output.c	Tue Feb  8 20:14:42 2000
@@ -549,7 +549,7 @@
 	 */
 	if (flags & TH_FIN && tp->t_flags & TF_SENTFIN &&
 	    tp->snd_nxt == tp->snd_max)
-		tp->snd_nxt--;
+		tp->snd_nxt -= random();
 	/*
 	 * If we are doing retransmissions, then snd_nxt will
 	 * not reflect the first unsent octet.  For ACK only