/**
    * Copyright (C) 2013 Steven Barth <steven@midlink.org>
    * Copyright (C) 2016 Hans Dedecker <dedeckeh@gmail.com>
    *
    * This program is free software; you can redistribute it and/or modify
    * it under the terms of the GNU General Public License v2 as published by
    * the Free Software Foundation.
    *
    * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   *
   */
  
  #ifndef _DHCPV6_IA_H_
  #define _DHCPV6_IA_H_
  
  #define ADDR_ENTRY_VALID_IA_ADDR(iface, i, m, addrs) \
          ((iface)->dhcpv6_assignall || \
           (i) == (m) || \
           (addrs)[(i)].prefix > 64)
  
  size_t get_preferred_addr(const struct odhcpd_ipaddr *addrs, const size_t addrlen);
  
  struct in6_addr in6_from_prefix_and_iid(const struct odhcpd_ipaddr *prefix, uint64_t iid);
  
  static inline bool valid_prefix_length(const struct dhcpv6_lease *a, const uint8_t prefix_length)
  {
          return a->length > prefix_length;
  }
  
  static inline bool valid_addr(const struct odhcpd_ipaddr *addr, time_t now)
  {
          return (addr->prefix <= 96 && addr->valid_lt > (uint32_t)now && addr->preferred_lt > (uint32_t)now);
  }
  
  #endif /* _DHCPV6_IA_H_ */
  

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