From 3ec37acbd1809f322fd8270f2f8964013bea53f7 Mon Sep 17 00:00:00 2001
From: Martine Lenders <mail@martine-lenders.eu>
Date: Sat, 17 Nov 2018 12:15:59 +0100
Subject: [PATCH] gnrc_ipv6: fix _fill_ipv6_hdr() for pure IPv6 packets
If a packet only contains IPv6 and IPv6 extension header snips (e.g. if
the IPv6 packet has no payload or if an extension header was not
pre-parsed)
---
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
index b030e39959..52a2f06155 100644
--- a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
+++ b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
@@ -442,7 +442,7 @@ static int _fill_ipv6_hdr(gnrc_netif_t *netif, gnrc_pktsnip_t *ipv6)
}
prev->next = payload;
prev = payload;
- } while (_is_ipv6_hdr(payload));
+ } while (_is_ipv6_hdr(payload) && (payload->next != NULL));
DEBUG("ipv6: calculate checksum for upper header.\n");
if ((res = gnrc_netreg_calc_csum(payload, ipv6)) < 0) {
if (res != -ENOENT) { /* if there is no checksum we are okay */
--
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