Index: head/sys/netinet/tcp_syncache.h
===================================================================
--- head/sys/netinet/tcp_syncache.h
+++ head/sys/netinet/tcp_syncache.h
@@ -56,7 +56,6 @@
 	int		sc_rxttime;		/* retransmit time */
 	u_int16_t	sc_rxmits;		/* retransmit counter */
 	u_int32_t	sc_tsreflect;		/* timestamp to reflect */
-	u_int32_t	sc_ts;			/* our timestamp to send */
 	u_int32_t	sc_tsoff;		/* ts offset w/ syncookies */
 	u_int32_t	sc_flowlabel;		/* IPv6 flowlabel */
 	tcp_seq		sc_irs;			/* seq from peer */
Index: head/sys/netinet/tcp_syncache.c
===================================================================
--- head/sys/netinet/tcp_syncache.c
+++ head/sys/netinet/tcp_syncache.c
@@ -1168,25 +1168,6 @@
 		}
 	}
 
-	/*
-	 * If timestamps were negotiated, the reflected timestamp
-	 * must be equal to what we actually sent in the SYN|ACK
-	 * except in the case of 0. Some boxes are known for sending
-	 * broken timestamp replies during the 3whs (and potentially
-	 * during the connection also).
-	 *
-	 * Accept the final ACK of 3whs with reflected timestamp of 0
-	 * instead of sending a RST and deleting the syncache entry.
-	 */
-	if ((to->to_flags & TOF_TS) && to->to_tsecr &&
-	    to->to_tsecr != sc->sc_ts) {
-		if ((s = tcp_log_addrs(inc, th, NULL, NULL)))
-			log(LOG_DEBUG, "%s; %s: TSECR %u != TS %u, "
-			    "segment rejected\n",
-			    s, __func__, to->to_tsecr, sc->sc_ts);
-		goto failed;
-	}
-
 	*lsop = syncache_socket(sc, *lsop, m);
 
 	if (*lsop == NULL)
@@ -1513,7 +1494,6 @@
 		 */
 		if (to->to_flags & TOF_TS) {
 			sc->sc_tsreflect = to->to_tsval;
-			sc->sc_ts = tcp_ts_getticks();
 			sc->sc_flags |= SCF_TIMESTAMP;
 		}
 		if (to->to_flags & TOF_SCALE) {
@@ -1742,8 +1722,7 @@
 			to.to_flags |= TOF_SCALE;
 		}
 		if (sc->sc_flags & SCF_TIMESTAMP) {
-			/* Virgin timestamp or TCP cookie enhanced one. */
-			to.to_tsval = sc->sc_ts;
+			to.to_tsval = sc->sc_tsoff + tcp_ts_getticks();
 			to.to_tsecr = sc->sc_tsreflect;
 			to.to_flags |= TOF_TS;
 		}
@@ -2050,8 +2029,7 @@
 
 	/* Randomize the timestamp. */
 	if (sc->sc_flags & SCF_TIMESTAMP) {
-		sc->sc_ts = arc4random();
-		sc->sc_tsoff = sc->sc_ts - tcp_ts_getticks();
+		sc->sc_tsoff = arc4random() - tcp_ts_getticks();
 	}
 
 	TCPSTAT_INC(tcps_sc_sendcookie);
@@ -2140,7 +2118,6 @@
 	if (to->to_flags & TOF_TS) {
 		sc->sc_flags |= SCF_TIMESTAMP;
 		sc->sc_tsreflect = to->to_tsval;
-		sc->sc_ts = to->to_tsecr;
 		sc->sc_tsoff = to->to_tsecr - tcp_ts_getticks();
 	}