diff --git a/sfe_ipv6_udp.c b/sfe_ipv6_udp.c
index 9e32513..5ffefdd 100644
--- a/sfe_ipv6_udp.c
+++ b/sfe_ipv6_udp.c
@@ -137,6 +137,8 @@
 	int ret;
 	bool hw_csum;
 	bool bridge_flow;
+	bool fast_xmit;
+	netdev_features_t features;
 
 	DEBUG_TRACE("%px: sfe: sfe_ipv6_recv_udp called.\n", skb);
 
@@ -527,6 +529,21 @@
 		skb->mark = cm->mark;
 	}
 
+	/*
+	 * For the first packets, check if it could got fast xmit.
+	 */
+	if (unlikely(!(cm->flags & SFE_IPV6_CONNECTION_MATCH_FLAG_FAST_XMIT_FLOW_CHECKED)
+				&& (cm->flags & SFE_IPV6_CONNECTION_MATCH_FLAG_FAST_XMIT_DEV_ADMISSION))){
+		cm->features = netif_skb_features(skb);
+		if (likely(sfe_fast_xmit_check(skb, cm->features))) {
+			cm->flags |= SFE_IPV6_CONNECTION_MATCH_FLAG_FAST_XMIT;
+		}
+		cm->flags |= SFE_IPV6_CONNECTION_MATCH_FLAG_FAST_XMIT_FLOW_CHECKED;
+	}
+	features = cm->features;
+
+	fast_xmit = !!(cm->flags & SFE_IPV6_CONNECTION_MATCH_FLAG_FAST_XMIT);
+
 	rcu_read_unlock();
 
 	this_cpu_inc(si->stats_pcpu->packets_forwarded64);
@@ -538,6 +555,15 @@
 	prefetch(skb_shinfo(skb));
 
 	/*
+	 * We do per packet condition check before we could fast xmit the
+	 * packet.
+	 */
+	if (likely(fast_xmit && dev_fast_xmit(skb, xmit_dev, features))) {
+		this_cpu_inc(si->stats_pcpu->packets_fast_xmited64);
+		return 1;
+	}
+
+	/*
 	 * Mark that this packet has been fast forwarded.
 	 */
 	skb->fast_forwarded = 1;