7388 Support DHCP Client FQDN. Allow IAID/DUID for all v4.

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2013 by Delphix. All rights reserved.
+  * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
   */
  
  #ifndef _LIBIPADM_IMPL_H
  #define _LIBIPADM_IMPL_H
  
*** 85,94 ****
--- 86,96 ----
                          boolean_t               ipadm_stateful;
                  } ipadm_ipv6_intfid_s;
                  struct {
                          boolean_t               ipadm_primary;
                          int32_t                 ipadm_wait;
+                         char                    ipadm_reqhost[MAXNAMELEN];
                  } ipadm_dhcp_s;
          } ipadm_addr_u;
  };
  
  #define ipadm_static_addr       ipadm_addr_u.ipadm_static_addr_s.ipadm_addr
*** 100,109 ****
--- 102,112 ----
  #define ipadm_intfidlen         ipadm_addr_u.ipadm_ipv6_intfid_s.ipadm_intfidlen
  #define ipadm_stateless         ipadm_addr_u.ipadm_ipv6_intfid_s.ipadm_stateless
  #define ipadm_stateful          ipadm_addr_u.ipadm_ipv6_intfid_s.ipadm_stateful
  #define ipadm_primary           ipadm_addr_u.ipadm_dhcp_s.ipadm_primary
  #define ipadm_wait              ipadm_addr_u.ipadm_dhcp_s.ipadm_wait
+ #define ipadm_reqhost   ipadm_addr_u.ipadm_dhcp_s.ipadm_reqhost
  
  /*
   * Data structures and callback functions related to property management
   */
  struct ipadm_prop_desc;
*** 143,153 ****
                              nvlist_t **);
  extern ipadm_status_t   i_ipadm_init_ifobj(ipadm_handle_t, const char *,
                              nvlist_t *);
  extern ipadm_status_t   i_ipadm_init_addrobj(ipadm_handle_t, nvlist_t *);
  extern ipadm_status_t   i_ipadm_addr_persist(ipadm_handle_t,
!                             const ipadm_addrobj_t, boolean_t, uint32_t);
  extern ipadm_status_t   i_ipadm_delete_addr(ipadm_handle_t, ipadm_addrobj_t);
  extern int              i_ipadm_strioctl(int, int, char *, int);
  extern boolean_t        i_ipadm_is_loopback(const char *);
  extern boolean_t        i_ipadm_is_vni(const char *);
  extern boolean_t        i_ipadm_is_ipmp(ipadm_handle_t, const char *);
--- 146,156 ----
                              nvlist_t **);
  extern ipadm_status_t   i_ipadm_init_ifobj(ipadm_handle_t, const char *,
                              nvlist_t *);
  extern ipadm_status_t   i_ipadm_init_addrobj(ipadm_handle_t, nvlist_t *);
  extern ipadm_status_t   i_ipadm_addr_persist(ipadm_handle_t,
!                             const ipadm_addrobj_t, boolean_t, uint32_t, const char *);
  extern ipadm_status_t   i_ipadm_delete_addr(ipadm_handle_t, ipadm_addrobj_t);
  extern int              i_ipadm_strioctl(int, int, char *, int);
  extern boolean_t        i_ipadm_is_loopback(const char *);
  extern boolean_t        i_ipadm_is_vni(const char *);
  extern boolean_t        i_ipadm_is_ipmp(ipadm_handle_t, const char *);
*** 183,193 ****
                              const void *);
  
  /* ipadm_addr.c */
  extern void             i_ipadm_init_addr(ipadm_addrobj_t, const char *,
                              const char *, ipadm_addr_type_t);
! extern ipadm_status_t   i_ipadm_merge_prefixlen_from_nvl(nvlist_t *, nvlist_t *,
                              const char *);
  extern ipadm_status_t   i_ipadm_get_addrobj(ipadm_handle_t, ipadm_addrobj_t);
  extern ipadm_status_t   i_ipadm_enable_static(ipadm_handle_t, const char *,
                              nvlist_t *, sa_family_t);
  extern ipadm_status_t   i_ipadm_enable_dhcp(ipadm_handle_t, const char *,
--- 186,196 ----
                              const void *);
  
  /* ipadm_addr.c */
  extern void             i_ipadm_init_addr(ipadm_addrobj_t, const char *,
                              const char *, ipadm_addr_type_t);
! extern ipadm_status_t   i_ipadm_merge_addrprops_from_nvl(nvlist_t *, nvlist_t *,
                              const char *);
  extern ipadm_status_t   i_ipadm_get_addrobj(ipadm_handle_t, ipadm_addrobj_t);
  extern ipadm_status_t   i_ipadm_enable_static(ipadm_handle_t, const char *,
                              nvlist_t *, sa_family_t);
  extern ipadm_status_t   i_ipadm_enable_dhcp(ipadm_handle_t, const char *,