diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c
--- a/sys/netinet/tcp_stacks/rack.c
+++ b/sys/netinet/tcp_stacks/rack.c
@@ -12610,14 +12610,11 @@
 		rsm->r_rtr_bytes = 0;
 		if (tp->t_flags & TF_SENTFIN)
 			rsm->r_flags |= RACK_HAS_FIN;
-		rsm->r_end = tp->snd_max;
-		if (tp->snd_una == tp->iss) {
-			/* The data space is one beyond snd_una */
+		if ((tp->snd_una == tp->iss) &&
+		    !TCPS_HAVEESTABLISHED(tp->t_state))
 			rsm->r_flags |= RACK_HAS_SYN;
-			rsm->r_start = tp->iss;
-			rsm->r_end = rsm->r_start + (tp->snd_max - tp->snd_una);
-		} else
-			rsm->r_start = tp->snd_una;
+		rsm->r_start = tp->snd_una;
+		rsm->r_end = tp->snd_max;
 		rsm->r_dupack = 0;
 		if (rack->rc_inp->inp_socket->so_snd.sb_mb != NULL) {
 			rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd, 0, &rsm->soff);