diff --git a/include/dp_port.h b/include/dp_port.h
index 793ce45a9..ef60e0679 100644
--- a/include/dp_port.h
+++ b/include/dp_port.h
@@ -196,6 +196,12 @@ struct dp_port *dp_get_port_by_pf_index(uint16_t index)
 	return index < RTE_DIM(_dp_pf_ports) ? _dp_pf_ports[index] : NULL;
 }
 
+static __rte_always_inline
+bool dp_conf_is_tap_mode(void)
+{
+	return dp_conf_get_nic_type() == DP_CONF_NIC_TYPE_TAP;
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/dp_nat.c b/src/dp_nat.c
index 05db9a01d..74fadc332 100644
--- a/src/dp_nat.c
+++ b/src/dp_nat.c
@@ -268,10 +268,10 @@ void dp_nat_chg_ip(struct dp_flow *df, struct rte_ipv4_hdr *ipv4_hdr,
 {
 	struct rte_udp_hdr *udp_hdr;
 	struct rte_tcp_hdr *tcp_hdr;
+	bool is_tap = dp_conf_is_tap_mode();
 
 	ipv4_hdr->hdr_checksum = 0;
 	m->ol_flags |= RTE_MBUF_F_TX_IPV4;
-	m->ol_flags |= RTE_MBUF_F_TX_IP_CKSUM;
 	m->tx_offload = 0;
 	m->l2_len = sizeof(struct rte_ether_hdr);
 	m->l3_len = rte_ipv4_hdr_len(ipv4_hdr);
@@ -280,15 +280,21 @@ void dp_nat_chg_ip(struct dp_flow *df, struct rte_ipv4_hdr *ipv4_hdr,
 	switch (df->l4_type) {
 		case IPPROTO_TCP:
 			tcp_hdr =  (struct rte_tcp_hdr *)(ipv4_hdr + 1);
-			tcp_hdr->cksum = 0;
-			m->ol_flags |= RTE_MBUF_F_TX_TCP_CKSUM;
 			m->l4_len = DP_TCP_HDR_LEN(tcp_hdr);
+			tcp_hdr->cksum = 0;
+			if (unlikely(is_tap))
+				tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, tcp_hdr);
+			else
+				m->ol_flags |= RTE_MBUF_F_TX_TCP_CKSUM;
 		break;
 		case IPPROTO_UDP:
 			udp_hdr =  (struct rte_udp_hdr *)(ipv4_hdr + 1);
-			udp_hdr->dgram_cksum = 0;
-			m->ol_flags |= RTE_MBUF_F_TX_UDP_CKSUM;
 			m->l4_len = sizeof(struct rte_udp_hdr);
+			udp_hdr->dgram_cksum = 0;
+			if (unlikely(is_tap))
+				udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, udp_hdr);
+			else
+				m->ol_flags |= RTE_MBUF_F_TX_UDP_CKSUM;
 		break;
 		case IPPROTO_ICMP:
 			m->l4_len = sizeof(struct rte_icmp_hdr);
@@ -296,6 +302,10 @@ void dp_nat_chg_ip(struct dp_flow *df, struct rte_ipv4_hdr *ipv4_hdr,
 		default:
 		break;
 	}
+	if (unlikely(is_tap))
+		ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
+	else
+		m->ol_flags |= RTE_MBUF_F_TX_IP_CKSUM;
 }
 
 static void dp_calculate_icmp_checksum(struct rte_icmp_hdr *icmp_hdr, size_t icmp_len)
diff --git a/src/dp_netlink.c b/src/dp_netlink.c
index adbd4a8b4..821d30d07 100644
--- a/src/dp_netlink.c
+++ b/src/dp_netlink.c
@@ -13,6 +13,7 @@
 #include "dp_log.h"
 #include "dp_netlink.h"
 #include "dp_util.h"
+#include "dp_port.h"
 
 static int dp_read_neigh(struct nlmsghdr *nh, __u32 nll, struct rte_ether_addr *neigh,
 						 const struct rte_ether_addr *own_mac)
@@ -33,6 +34,9 @@ static int dp_read_neigh(struct nlmsghdr *nh, __u32 nll, struct rte_ether_addr *
 				if (rt_attr->rta_type == NDA_LLADDR)
 					memcpy(&neigh->addr_bytes, RTA_DATA(rt_attr), sizeof(neigh->addr_bytes));
 			}
+			// If it is a tap device, we make an exception with own MAC address check. FeBOX case
+			if (dp_conf_is_tap_mode())
+				return DP_OK;
 			if (!DP_MAC_EQUAL(own_mac, neigh))
 				return DP_OK;
 		}