--- /dev/null
+/*-
+ * Copyright (c) 2015 Alexandre Fenyo <alex@fenyo.net> - http://www.fenyo.net
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef __NDCONF_H
+#define __NDCONF_H
+
+// define DEBUG_NDPROXY to send debugging informations to the console
+// #define DEBUG_NDPROXY
+
+// max size of a MAC address: XX:XX:XX:XX:XX:XX = 17 chars
+#define MACMAXSIZE 17
+
+// max size of an IPv6 address: XXXX:XXXX:XXXX:XXXX:XXXX:XXXX:YYY.YYY.YYY.YYY = 45 chars
+#define IP6MAXSIZE 45
+
+// lower bound of exception addresses count to reserve space for
+// if more than 32 exception addresses are needed, you may have to adjust this parameter
+#define CONF_NEXCEPTIONS_MAX 32
+// exceptions list: IPv6 addresses separated by ';', whole string is null terminated
+#define CONF_NEXCEPTIONS_SIZE (CONF_NEXCEPTIONS_MAX * (IP6MAXSIZE + 1) + 1)
+
+// lower bound of uplink IPv6 addresses count to reserve space for
+// if more than 32 uplink IPv6 addresses are needed, you may have to adjust this parameter
+#define CONF_NUPLINK_MAX 32
+// exceptions list: IPv6 addresses separated by ';', whole string is null terminated
+#define CONF_NUPLINK_SIZE (CONF_NUPLINK_MAX * (IP6MAXSIZE + 1) + 1)
+
+// packets handled counter
+extern int ndproxy_conf_count;
+
+// uplink interface name
+extern char ndproxy_conf_str_uplink_interface[IFNAMSIZ];
+
+// uplink router IPv6 link-local or global address
+extern struct in6_addr ndproxy_conf_uplink_ipv6_addresses[CONF_NUPLINK_MAX];
+extern int ndproxy_conf_uplink_ipv6_naddresses;
+
+// IPv6 link-local or global exceptions address list
+extern struct in6_addr ndproxy_conf_exception_ipv6_addresses[CONF_NEXCEPTIONS_MAX];
+extern int ndproxy_conf_exception_ipv6_naddresses;
+
+// downlink router MAC address
+extern struct ether_addr ndproxy_conf_downlink_mac_address;
+extern bool ndproxy_conf_downlink_mac_address_isset;
+
+// uplink router MAC address
+extern struct ether_addr ndproxy_conf_uplink_mac_address;
+extern bool ndproxy_conf_uplink_mac_address_isset;
+
+#endif