From 0bdbb68959e040253f4d0b8c3f5600aed2be989b Mon Sep 17 00:00:00 2001
From: Martine Lenders <mail@martine-lenders.eu>
Date: Sat, 17 Nov 2018 01:55:00 +0100
Subject: [PATCH] gnrc_ipv6: drop packets with unspecified destination
It just doesn't makes sense to handle them any further
---
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
index d049c4c07e..f21a10f8b3 100644
--- a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
+++ b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
@@ -665,6 +665,12 @@ static void _send(gnrc_pktsnip_t *pkt, bool prep_hdr)
gnrc_pktbuf_release_error(pkt, EINVAL);
return;
}
+ if (ipv6_addr_is_unspecified(&((ipv6_hdr_t *)pkt->data)->dst)) {
+ DEBUG("ipv6: destination address is unspecified address (::), "
+ "dropping packet \n");
+ gnrc_pktbuf_release_error(pkt, EINVAL);
+ return;
+ }
tmp_pkt = gnrc_pktbuf_start_write(pkt);
if (tmp_pkt == NULL) {
DEBUG("ipv6: unable to get write access to IPv6 header, dropping packet\n");
--
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