diff --git a/sys/include/net/dhcpv6.h b/sys/include/net/dhcpv6.h
new file mode 100644
index 0000000000..cff402c9c9
--- /dev/null
+++ b/sys/include/net/dhcpv6.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2018 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @defgroup    net_dhcpv6 Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
+ * @ingroup     net_ipv6
+ * @brief       DHCPv6 definitions
+ * @{
+ *
+ * @file
+ * @brief   DHCPv6 definitions
+ * @note    This header is based on [RFC 8415](https://tools.ietf.org/html/rfc8415)
+ *
+ * @author  Martine Lenders <m.lenders@fu-berlin.de>
+ */
+#ifndef NET_DHCPV6_H
+#define NET_DHCPV6_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    DHCPv6 ports
+ * @see [RFC 8415, section 7.2]
+ *      (https://tools.ietf.org/html/rfc8415#section-7.2)
+ * @{
+ */
+#define DHCPV6_CLIENT_PORT          (546U)  /**< client port */
+#define DHCPV6_SERVER_PORT          (547U)  /**< server and relay agent port */
+/** @} */
+
+/**
+ * @name    DHCPv6 message types
+ * @anchor  net_dhcp6_msg_types
+ * @see [RFC 8415, section 7.3]
+ *      (https://tools.ietf.org/html/rfc8415#section-7.3)
+ * @{
+ */
+#define DHCPV6_SOLICIT              (1U)    /**< SOLICIT */
+#define DHCPV6_ADVERTISE            (2U)    /**< ADVERTISE */
+#define DHCPV6_REQUEST              (3U)    /**< REQUEST */
+#define DHCPV6_RENEW                (5U)    /**< RENEW */
+#define DHCPV6_REBIND               (6U)    /**< REBIND */
+#define DHCPV6_REPLY                (7U)    /**< REPLY */
+/** @ } */
+
+/**
+ * @name    DHCPv6 option codes
+ * @anchor  net_dhcp6_opt_codes
+ * @see [RFC 8415, section 21]
+ *      (https://tools.ietf.org/html/rfc8415#section-21)
+ * @{
+ */
+#define DHCPV6_OPT_CID              (1U)    /**< client identifier option */
+#define DHCPV6_OPT_SID              (2U)    /**< server identifier option */
+#define DHCPV6_OPT_ORO              (6U)    /**< option request option */
+#define DHCPV6_OPT_PREF             (7U)    /**< preference option */
+#define DHCPV6_OPT_ELAPSED_TIME     (8U)    /**< elapsed time option */
+#define DHCPV6_OPT_STATUS           (13U)   /**< status code option */
+#define DHCPV6_OPT_IA_PD            (25U)   /**< identity association for prefix
+                                             *   delegation (IA_PD) option */
+#define DHCPV6_OPT_IAPFX            (26U)   /**< IA prefix option */
+#define DHCPV6_OPT_SMR              (82U)   /**< SOL_MAX_RT option */
+/** @} */
+
+/**
+ * @name    DHCPv6 status codes
+ * @anchor  net_dhcp6_status_codes
+ * @see [RFC 8415, section 21.13]
+ *      (https://tools.ietf.org/html/rfc8415#section-21.13)
+ * @{
+ */
+#define DHCPV6_STATUS_SUCCESS       (0U)    /**< Success */
+/** @} */
+
+/**
+ * @name DHCPv6 unique identifier (DUID) types
+ * @see [RFC 8415, section 11.1]
+ *      (https://tools.ietf.org/html/rfc8415#section-11.1)
+ * @{
+ */
+#define DHCPV6_DUID_TYPE_L2         (3U)    /**< Link-layer address */
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_DHCPV6_H */
+/** @} */