Index: sys/netinet/tcp_lro.c
===================================================================
--- sys/netinet/tcp_lro.c
+++ sys/netinet/tcp_lro.c
@@ -1948,7 +1948,13 @@
 		m_freem(mb);
 		return;
 	}
-
+	/* Get a more accurate view of when the packet arrived if hdwr tstmp is lacking */
+	if ((tcplro_stacks_wanting_mbufq != 0) &&
+	    ((mb->m_flags & (M_TSTMP_LRO | M_TSTMP)) == 0)) {
+		binuptime(&lc->lro_last_queue_time);
+		mb->m_pkthdr.rcv_tstmp = bintime2ns(&lc->lro_last_queue_time); 
+		mb->m_flags |= M_TSTMP_LRO;
+	}
 	/* check if packet is not LRO capable */
 	if (__predict_false((lc->ifp->if_capenable & IFCAP_LRO) == 0)) {
 		/* input packet to network layer */