--- ip6.c.orig	2020-05-04 19:20:03.439005126 +0200
+++ ip6.c	2020-05-04 19:56:52.310024675 +0200
@@ -1042,9 +1042,15 @@
 options_done:
 
   /* send to upper layers */
+#if IP6_DEBUG
+  /* p points to IPv6 header again for raw_input. */
+  pbuf_add_header_force(p, hlen_tot);
   LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: \n"));
   ip6_debug_print(p);
   LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len));
+  /* Point to payload. */
+  pbuf_remove_header(p, hlen_tot);
+#endif
 
   ip_data.current_ip_header_tot_len = hlen_tot;