1 files changed, 1 insertions, 1 deletions

diff --git a/networking/udhcp/d6_packet.c b/networking/udhcp/d6_packet.c
index 446497e15..167a813e3 100644
--- a/networking/udhcp/d6_packet.c
+++ b/networking/udhcp/d6_packet.c
@@ -103,7 +103,7 @@ int FAST_FUNC d6_send_raw_packet(
          */
         packet.ip6.ip6_hlim = IPPROTO_UDP;
         packet.udp.check = inet_cksum(
-                                (uint16_t *)&packet + 2,
+                                (uint8_t *)&packet + 4,
                                 offsetof(struct ip6_udp_d6_packet, data) - 4 + d6_pkt_size
         );
         /* fix 'hop limit' and 'next header' after UDP checksumming */