diff --git a/cpu/native/ng_tapnet/ng_tapnet.c b/cpu/native/ng_tapnet/ng_tapnet.c
index b73affce8b64..d136d41319c8 100644
--- a/cpu/native/ng_tapnet/ng_tapnet.c
+++ b/cpu/native/ng_tapnet/ng_tapnet.c
@@ -507,20 +507,7 @@ static int _marshall_ethernet(ng_tapnet_t *dev, uint8_t *buffer, ng_pktsnip_t *p
         return -EBADMSG;
     }
 
-    switch (pkt->next->type) {
-#ifdef MODULE_NG_IPV6
-
-        case NG_NETTYPE_IPV6:
-            DEBUG("ng_tapnet: use Ethertype IPV6\n");
-            hdr->type = byteorder_htons(NG_ETHERTYPE_IPV6);
-            break;
-#endif
-
-        default:
-            DEBUG("ng_tapnet: Ethertype unknown, use 0xffff\n");
-            hdr->type = byteorder_htons(0xffff);
-            break;
-    }
+    hdr->type = byteorder_htons(ng_nettype_to_ethertype(pkt->next->type));
 
     netif_hdr = pkt->data;
 
@@ -616,20 +603,10 @@ static void _rx_event(ng_tapnet_t *dev)
         ng_netif_hdr_set_dst_addr(netif_hdr->data, hdr->dst, NG_ETHERNET_ADDR_LEN);
         ((ng_netif_hdr_t *)netif_hdr->data)->if_pid = thread_getpid();
 
-        switch (byteorder_ntohs(hdr->type)) {
-#ifdef MODULE_NG_IPV6
-
-            case NG_ETHERTYPE_IPV6:
-                DEBUG("ng_tapnet: received IPv6 packet ");
-                receive_type = NG_NETTYPE_IPV6;
-#endif
-
-            default:
-                DEBUG("ng_tapnet: received packet of unknown type ");
-                break;
-        }
+        receive_type = ng_nettype_from_ethertype(byteorder_ntohs(hdr->type));
 
-        DEBUG("from %02x:%02x:%02x:%02x:%02x:%02x of length %zu\n",
+        DEBUG("ng_tapnet: received packet from %02x:%02x:%02x:%02x:%02x:%02x "
+              "of length %zu\n",
               hdr->src[0], hdr->src[1], hdr->src[2], hdr->src[3], hdr->src[4],
               hdr->src[5], data_len);
 #if defined(MODULE_OD) && ENABLE_DEBUG