Index: sys/netinet/tcp_input.c
===================================================================
RCS file: /cvsroot/src/sys/netinet/tcp_input.c,v
retrieving revision 1.413
diff -u -r1.413 tcp_input.c
--- sys/netinet/tcp_input.c	8 Nov 2018 06:43:52 -0000	1.413
+++ sys/netinet/tcp_input.c	28 May 2019 14:48:46 -0000
@@ -1350,11 +1350,11 @@
 		if ((optlen == TCPOLEN_TSTAMP_APPA ||
 		     (optlen > TCPOLEN_TSTAMP_APPA &&
 		      optp[TCPOLEN_TSTAMP_APPA] == TCPOPT_EOL)) &&
-		    *(u_int32_t *)optp == htonl(TCPOPT_TSTAMP_HDR) &&
+		    be32dec(optp) == TCPOPT_TSTAMP_HDR &&
 		    (th->th_flags & TH_SYN) == 0) {
 			opti.ts_present = 1;
-			opti.ts_val = ntohl(*(u_int32_t *)(optp + 4));
-			opti.ts_ecr = ntohl(*(u_int32_t *)(optp + 8));
+			opti.ts_val = be32dec(optp + 4);
+			opti.ts_ecr = be32dec(optp + 8);
 			optp = NULL;	/* we've parsed the options */
 		}
 	}