From: Shawn Routhier <sar@isc.org>
Date: Fri, 16 May 2014 22:24:48 +0000 (-0700)
Subject: [master] Add -df option to client code to help share DUIDs
X-Git-Tag: v4_3_1b1~14
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=79818c93448403843280bcb9b3d33f70461828c7;p=thirdparty%2Fdhcp.git

[master] Add -df option to client code to help share DUIDs

Add the "-df <duid file>" option to the client code in order
to make it easier to share DUIDs between a v4 instance and
a v6 instance.  This option instructs the client to search
the duid file for a DUID if it didn't find one in the main
lease file.

In addition add the infrastructure for running ATF tests
for the client and write some ATF tests for this patch.
---

diff --git a/RELNOTES b/RELNOTES
index 133b9cc5f..fa6172da4 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -145,6 +145,13 @@ by Eric Young (eay@cryptsoft.com).
   also be a change for currently running systems, so we have left it at 64.
   [ISC-Bugs #DHCP-2]
 
+- Add a run time option to the client "-df" to allow the administrator to
+  point to a second lease file the client can search for a DUID.  This can
+  be used to allow a v4 and a v6 instance of the client to share a DUID.
+  The second file will only be searched if there isn't a DUID in the main
+  lease file and the DUID will be written out to the main lease file.
+  [ISC-Bugs #34886]
+
 			Changes since 4.3.0rc1
 
 - None
diff --git a/client/Makefile.am b/client/Makefile.am
index 59364aa00..85645af80 100644
--- a/client/Makefile.am
+++ b/client/Makefile.am
@@ -1,3 +1,9 @@
+# We want to build this directory first, before descending into tests subdir.
+# The reason is that ideally the tests should link existing objects from this
+# directory. That eliminates any discrepancies between tested code and
+# production code. Sadly, we are not there yet.
+SUBDIRS = . tests
+
 dist_sysconf_DATA = dhclient.conf.example
 sbin_PROGRAMS = dhclient
 dhclient_SOURCES = clparse.c dhclient.c dhc6.c \
diff --git a/client/Makefile.in b/client/Makefile.in
index 8971e99bd..066c698e6 100644
--- a/client/Makefile.in
+++ b/client/Makefile.in
@@ -130,6 +130,14 @@ am__v_CCLD_0 = @echo "  CCLD    " $@;
 am__v_CCLD_1 = 
 SOURCES = $(dhclient_SOURCES)
 DIST_SOURCES = $(dhclient_SOURCES)
+RECURSIVE_TARGETS = all-recursive check-recursive cscopelist-recursive \
+	ctags-recursive dvi-recursive html-recursive info-recursive \
+	install-data-recursive install-dvi-recursive \
+	install-exec-recursive install-html-recursive \
+	install-info-recursive install-pdf-recursive \
+	install-ps-recursive install-recursive installcheck-recursive \
+	installdirs-recursive pdf-recursive ps-recursive \
+	tags-recursive uninstall-recursive
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
@@ -167,6 +175,14 @@ man8dir = $(mandir)/man8
 NROFF = nroff
 MANS = $(man_MANS)
 DATA = $(dist_sysconf_DATA)
+RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+  distclean-recursive maintainer-clean-recursive
+am__recursive_targets = \
+  $(RECURSIVE_TARGETS) \
+  $(RECURSIVE_CLEAN_TARGETS) \
+  $(am__extra_recursive_targets)
+AM_RECURSIVE_TARGETS = $(am__recursive_targets:-recursive=) TAGS CTAGS \
+	distdir
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
 # Read a list of newline-separated strings from the standard input,
 # and print each of them once, without duplicates.  Input order is
@@ -186,7 +202,33 @@ am__define_uniq_tagged_files = \
   done | $(am__uniquify_input)`
 ETAGS = etags
 CTAGS = ctags
+DIST_SUBDIRS = $(SUBDIRS)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+am__relativize = \
+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
+  sed_rest='s,^[^/]*/*,,'; \
+  sed_last='s,^.*/\([^/]*\)$$,\1,'; \
+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
@@ -289,6 +331,12 @@ target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
+
+# We want to build this directory first, before descending into tests subdir.
+# The reason is that ideally the tests should link existing objects from this
+# directory. That eliminates any discrepancies between tested code and
+# production code. Sadly, we are not there yet.
+SUBDIRS = . tests
 dist_sysconf_DATA = dhclient.conf.example
 dhclient_SOURCES = clparse.c dhclient.c dhc6.c \
 		   scripts/bsdos scripts/freebsd scripts/linux scripts/macos \
@@ -300,7 +348,7 @@ dhclient_LDADD = ../common/libdhcp.a ../omapip/libomapi.a ../bind/lib/libirs.a \
 
 man_MANS = dhclient.8 dhclient-script.8 dhclient.conf.5 dhclient.leases.5
 EXTRA_DIST = $(man_MANS)
-all: all-am
+all: all-recursive
 
 .SUFFIXES:
 .SUFFIXES: .c .o .obj
@@ -512,14 +560,61 @@ uninstall-dist_sysconfDATA:
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
 	dir='$(DESTDIR)$(sysconfdir)'; $(am__uninstall_files_from_dir)
 
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run 'make' without going through this Makefile.
+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
+$(am__recursive_targets):
+	@fail=; \
+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
+	else \
+	  failcom='exit 1'; \
+	fi; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
 ID: $(am__tagged_files)
 	$(am__define_uniq_tagged_files); mkid -fID $$unique
-tags: tags-am
+tags: tags-recursive
 TAGS: tags
 
 tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
 	set x; \
 	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      set "$$@" "$$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
 	$(am__define_uniq_tagged_files); \
 	shift; \
 	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
@@ -532,7 +627,7 @@ tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
 	      $$unique; \
 	  fi; \
 	fi
-ctags: ctags-am
+ctags: ctags-recursive
 
 CTAGS: ctags
 ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
@@ -545,7 +640,7 @@ GTAGS:
 	here=`$(am__cd) $(top_builddir) && pwd` \
 	  && $(am__cd) $(top_srcdir) \
 	  && gtags -i $(GTAGS_ARGS) "$$here"
-cscopelist: cscopelist-am
+cscopelist: cscopelist-recursive
 
 cscopelist-am: $(am__tagged_files)
 	list='$(am__tagged_files)'; \
@@ -594,22 +689,48 @@ distdir: $(DISTFILES)
 	    || exit 1; \
 	  fi; \
 	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
 check-am: all-am
-check: check-am
+check: check-recursive
 all-am: Makefile $(PROGRAMS) $(MANS) $(DATA)
-installdirs:
+installdirs: installdirs-recursive
+installdirs-am:
 	for dir in "$(DESTDIR)$(sbindir)" "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(man8dir)" "$(DESTDIR)$(sysconfdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
-install: install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
 
 install-am: all-am
 	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
 
-installcheck: installcheck-am
+installcheck: installcheck-recursive
 install-strip:
 	if test -z '$(STRIP)'; then \
 	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
@@ -631,70 +752,70 @@ distclean-generic:
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
-clean: clean-am
+clean: clean-recursive
 
 clean-am: clean-generic clean-sbinPROGRAMS mostlyclean-am
 
-distclean: distclean-am
+distclean: distclean-recursive
 	-rm -rf ./$(DEPDIR)
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-tags
 
-dvi: dvi-am
+dvi: dvi-recursive
 
 dvi-am:
 
-html: html-am
+html: html-recursive
 
 html-am:
 
-info: info-am
+info: info-recursive
 
 info-am:
 
 install-data-am: install-man
 
-install-dvi: install-dvi-am
+install-dvi: install-dvi-recursive
 
 install-dvi-am:
 
 install-exec-am: install-dist_sysconfDATA install-sbinPROGRAMS
 
-install-html: install-html-am
+install-html: install-html-recursive
 
 install-html-am:
 
-install-info: install-info-am
+install-info: install-info-recursive
 
 install-info-am:
 
 install-man: install-man5 install-man8
 
-install-pdf: install-pdf-am
+install-pdf: install-pdf-recursive
 
 install-pdf-am:
 
-install-ps: install-ps-am
+install-ps: install-ps-recursive
 
 install-ps-am:
 
 installcheck-am:
 
-maintainer-clean: maintainer-clean-am
+maintainer-clean: maintainer-clean-recursive
 	-rm -rf ./$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
-mostlyclean: mostlyclean-am
+mostlyclean: mostlyclean-recursive
 
 mostlyclean-am: mostlyclean-compile mostlyclean-generic
 
-pdf: pdf-am
+pdf: pdf-recursive
 
 pdf-am:
 
-ps: ps-am
+ps: ps-recursive
 
 ps-am:
 
@@ -703,23 +824,23 @@ uninstall-am: uninstall-dist_sysconfDATA uninstall-man \
 
 uninstall-man: uninstall-man5 uninstall-man8
 
-.MAKE: install-am install-strip
-
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
-	clean-sbinPROGRAMS cscopelist-am ctags ctags-am distclean \
-	distclean-compile distclean-generic distclean-tags distdir dvi \
-	dvi-am html html-am info info-am install install-am \
-	install-data install-data-am install-dist_sysconfDATA \
-	install-dvi install-dvi-am install-exec install-exec-am \
-	install-html install-html-am install-info install-info-am \
-	install-man install-man5 install-man8 install-pdf \
-	install-pdf-am install-ps install-ps-am install-sbinPROGRAMS \
-	install-strip installcheck installcheck-am installdirs \
-	maintainer-clean maintainer-clean-generic mostlyclean \
-	mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \
-	tags tags-am uninstall uninstall-am uninstall-dist_sysconfDATA \
-	uninstall-man uninstall-man5 uninstall-man8 \
-	uninstall-sbinPROGRAMS
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic clean-sbinPROGRAMS cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am \
+	install-dist_sysconfDATA install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-man5 \
+	install-man8 install-pdf install-pdf-am install-ps \
+	install-ps-am install-sbinPROGRAMS install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-dist_sysconfDATA uninstall-man \
+	uninstall-man5 uninstall-man8 uninstall-sbinPROGRAMS
 
 
 dhclient.o: dhclient.c
diff --git a/client/clparse.c b/client/clparse.c
index 646229f18..320c42f57 100644
--- a/client/clparse.c
+++ b/client/clparse.c
@@ -244,6 +244,45 @@ int read_client_conf_file (const char *name, struct interface_info *ip,
 }
 
 
+/* lease-file :== client-lease-statements END_OF_FILE
+   client-lease-statements :== <nil>
+		     | client-lease-statements LEASE client-lease-statement
+ * This routine looks through a lease file and only tries to parse
+ * the duid statements.
+ */
+
+void read_client_duid ()
+{
+	int file;
+	isc_result_t status;
+	struct parse *cfile;
+	const char *val;
+	int token;
+
+	/* Open the lease file.   If we can't open it, just return -
+	   we can safely trust the server to remember our state. */
+	if ((file = open (path_dhclient_duid, O_RDONLY)) < 0)
+		return;
+
+	cfile = NULL;
+	status = new_parse(&cfile, file, NULL, 0, path_dhclient_duid, 0);
+	if (status != ISC_R_SUCCESS || cfile == NULL)
+		return;
+
+	while ((token = next_token(&val, NULL, cfile)) != END_OF_FILE) {
+		/*
+		 * All we care about is DUIDs - if we get anything else
+		 * just toss it and continue looking for DUIDs until we
+		 * run out of file.  
+		 */
+		if (token == DEFAULT_DUID) {
+			parse_client_default_duid(cfile);
+		}
+	}
+
+	end_parse(&cfile);
+}
+
 /* lease-file :== client-lease-statements END_OF_FILE
    client-lease-statements :== <nil>
 		     | client-lease-statements LEASE client-lease-statement */
diff --git a/client/dhclient.8 b/client/dhclient.8
index 11fb34770..f2f93c197 100644
--- a/client/dhclient.8
+++ b/client/dhclient.8
@@ -73,6 +73,10 @@ dhclient - Dynamic Host Configuration Protocol Client
 .B -d
 ]
 [
+.B -df
+.I duid-lease-file
+]
+[
 .B -e
 .I VAR=value
 ]
@@ -391,6 +395,16 @@ Path to the client configuration file.  If unspecified, the default
 .B ETCDIR/dhclient.conf
 is used.  See \fBdhclient.conf(5)\fR for a description of this file.
 .TP
+.BI \-df \ duid-lease-file
+Path to a secondary lease file.  If the primary lease file doesn't contain
+a DUID this file will be searched.  The DUID read from the secondary will
+be written to the primary.  This option can be used to allow an IPv4 instance
+of the client to share a DUID with an IPv6 instance.  After starting one of
+the instances the second can be started with this option pointing to the
+lease file of the first instance.  There is no default.  If no file is
+specified no search is made for a DUID should one not be found in the main
+lease file.
+.TP
 .BI \-lf \ lease-file
 Path to the lease database file.  If unspecified, the default
 .B DBDIR/dhclient.leases
diff --git a/client/dhclient.c b/client/dhclient.c
index fbafe13a8..cd82070dd 100644
--- a/client/dhclient.c
+++ b/client/dhclient.c
@@ -47,6 +47,7 @@ const char *path_dhclient_db = NULL;
 const char *path_dhclient_pid = NULL;
 static char path_dhclient_script_array[] = _PATH_DHCLIENT_SCRIPT;
 char *path_dhclient_script = path_dhclient_script_array;
+const char *path_dhclient_duid = NULL;
 
 /* False (default) => we write and use a pid file */
 isc_boolean_t no_pid_file = ISC_FALSE;
@@ -100,6 +101,7 @@ static int check_domain_name_list(const char *ptr, size_t len, int dots);
 static int check_option_values(struct universe *universe, unsigned int opt,
 			       const char *ptr, size_t len);
 
+#ifndef UNIT_TEST
 int
 main(int argc, char **argv) {
 	int fd;
@@ -210,6 +212,10 @@ main(int argc, char **argv) {
 				usage();
 			path_dhclient_conf = argv[i];
 			no_dhclient_conf = 1;
+		} else if (!strcmp(argv[i], "-df")) {
+			if (++i == argc)
+				usage();
+			path_dhclient_duid = argv[i];
 		} else if (!strcmp(argv[i], "-lf")) {
 			if (++i == argc)
 				usage();
@@ -504,6 +510,11 @@ main(int argc, char **argv) {
 	/* Parse the lease database. */
 	read_client_leases();
 
+	/* If desired parse the secondary lease database for a DUID */
+	if ((default_duid.len == 0) && (path_dhclient_duid != NULL)) {
+		read_client_duid();
+	}
+
 	/* Rewrite the lease database... */
 	rewrite_client_leases();
 
@@ -723,6 +734,7 @@ main(int argc, char **argv) {
 	/* In fact dispatch() never returns. */
 	return 0;
 }
+#endif /* !UNIT_TEST */
 
 static void usage()
 {
@@ -738,8 +750,8 @@ static void usage()
 #else /* DHCPv6 */
 		  "[-I1dvrxi] [-nw] [-p <port>] [-D LL|LLT] \n"
 #endif /* DHCPv6 */
-		  "                [-s server-addr] [-cf config-file] "
-		  "[-lf lease-file]\n"
+		  "                [-s server-addr] [-cf config-file]\n"
+		  "                [-df duid-file] [-lf lease-file]\n"
 		  "                [-pf pid-file] [--no-pid] [-e VAR=val]\n"
 		  "                [-sf script-file] [interface]");
 }
@@ -763,6 +775,11 @@ void run_stateless(int exit_mode)
 	/* Parse the lease database. */
 	read_client_leases();
 
+	/* If desired parse the secondary lease database for a DUID */
+	if ((default_duid.len == 0) && (path_dhclient_duid != NULL)) {
+		read_client_duid();
+	}
+
 	/* Establish a default DUID. */
 	if (default_duid.len == 0) {
 		if (default_duid.buffer != NULL)
@@ -2884,6 +2901,7 @@ form_duid(struct data_string *duid, const char *file, int line)
 {
 	struct interface_info *ip;
 	int len;
+	char *str;
 
 	/* For now, just use the first interface on the list. */
 	ip = interfaces;
@@ -2926,6 +2944,14 @@ form_duid(struct data_string *duid, const char *file, int line)
 		memcpy(duid->buffer->data + 4, ip->hw_address.hbuf + 1,
 		       ip->hw_address.hlen - 1);
 	}
+
+	str = quotify_buf(duid->data, duid->len, MDL);
+	if (str == NULL)
+		log_info("Created duid.");
+	else {
+		log_info("Created duid %s.", str);
+		dfree(str, MDL);
+	}
 }
 
 /* Write the default DUID to the lease store. */
diff --git a/client/tests/Atffile b/client/tests/Atffile
new file mode 100644
index 000000000..b2fdc0f13
--- /dev/null
+++ b/client/tests/Atffile
@@ -0,0 +1,5 @@
+Content-Type: application/X-atf-atffile; version="1"
+
+prop: test-suite = dhcp4
+
+tp-glob: *_unittests
diff --git a/client/tests/Makefile.am b/client/tests/Makefile.am
new file mode 100644
index 000000000..484318b08
--- /dev/null
+++ b/client/tests/Makefile.am
@@ -0,0 +1,40 @@
+SUBDIRS = .
+
+AM_CPPFLAGS = $(ATF_CFLAGS) -DUNIT_TEST -I$(top_srcdir)/includes
+AM_CPPFLAGS += -I$(top_srcdir)/bind/include -I$(top_srcdir)
+AM_CPPFLAGS += -DLOCALSTATEDIR='"."'
+AM_CPPFLAGS += -DCLIENT_PATH='"."'
+
+EXTRA_DIST = Atffile duid0_test.txt duid1_test.txt duid2_test.txt duid3_test.txt
+
+# for autotools debugging only
+info:
+	@echo "ATF_CFLAGS=$(ATF_CFLAGS)"
+	@echo "ATF_LDFLAGS=$(ATF_LDFLAGS)"
+	@echo "ATF_LIBS=$(ATF_LIBS)"
+
+DHCPSRC = ../clparse.c ../dhc6.c ../dhclient.c
+
+DHCPLIBS = $(top_builddir)/common/libdhcp.a $(top_builddir)/omapip/libomapi.a    \
+          $(top_builddir)/dhcpctl/libdhcpctl.a $(top_builddir)/bind/lib/libirs.a \
+	  $(top_builddir)/bind/lib/libdns.a $(top_builddir)/bind/lib/libisccfg.a \
+	  $(top_builddir)/bind/lib/libisc.a
+
+ATF_TESTS =
+TESTS = 
+if HAVE_ATF
+
+check: $(ATF_TESTS)
+	atf-run | atf-report
+
+ATF_TESTS += duid_unittests 
+
+duid_unittests_SOURCES = $(DHCPSRC) 
+duid_unittests_SOURCES += duid_unittest.c
+
+duid_unittests_LDADD = $(ATF_LDFLAGS)
+duid_unittests_LDADD += $(DHCPLIBS)
+
+endif
+
+check_PROGRAMS = $(ATF_TESTS) $(TESTS)
diff --git a/client/tests/Makefile.in b/client/tests/Makefile.in
new file mode 100644
index 000000000..e7b8f5ca5
--- /dev/null
+++ b/client/tests/Makefile.in
@@ -0,0 +1,1078 @@
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+	exit $$?;
+recheck: all $(check_PROGRAMS)
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+.test.log:
+	@p='$<'; \
+	$(am__set_b); \
+	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+@am__EXEEXT_TRUE@.test$(EXEEXT).log:
+@am__EXEEXT_TRUE@	@p='$<'; \
+@am__EXEEXT_TRUE@	$(am__set_b); \
+@am__EXEEXT_TRUE@	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+@am__EXEEXT_TRUE@	--log-file $$b.log --trs-file $$b.trs \
+@am__EXEEXT_TRUE@	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+@am__EXEEXT_TRUE@	"$$tst" $(AM_TESTS_FD_REDIRECT)
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) $(check_PROGRAMS)
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-recursive
+all-am: Makefile
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-checkPROGRAMS clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) check-am install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-TESTS check-am clean clean-checkPROGRAMS clean-generic \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am recheck tags tags-am \
+	uninstall uninstall-am
+
+
+# for autotools debugging only
+info:
+	@echo "ATF_CFLAGS=$(ATF_CFLAGS)"
+	@echo "ATF_LDFLAGS=$(ATF_LDFLAGS)"
+	@echo "ATF_LIBS=$(ATF_LIBS)"
+
+@HAVE_ATF_TRUE@check: $(ATF_TESTS)
+@HAVE_ATF_TRUE@	atf-run | atf-report
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/client/tests/duid0_test.txt b/client/tests/duid0_test.txt
new file mode 100644
index 000000000..75e8d452d
--- /dev/null
+++ b/client/tests/duid0_test.txt
@@ -0,0 +1,33 @@
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+default-duid "\000\001";
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
diff --git a/client/tests/duid1_test.txt b/client/tests/duid1_test.txt
new file mode 100644
index 000000000..38761858c
--- /dev/null
+++ b/client/tests/duid1_test.txt
@@ -0,0 +1,3 @@
+default-duid "\000\001\000\001\001\002\003\004\005\006\007\010\011\012";
+
+
diff --git a/client/tests/duid2_test.txt b/client/tests/duid2_test.txt
new file mode 100644
index 000000000..6837e9ab6
--- /dev/null
+++ b/client/tests/duid2_test.txt
@@ -0,0 +1,66 @@
+default-duid "\000\003\000\001\005\006\007\010\011\012";
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 22:11:53;
+  rebind 2 2014/05/13 22:11:53;
+  expire 2 2014/05/13 22:11:53;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  foooo;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
+
+default-duid "\000\003\000\001\017\020\021\022\023\024";
diff --git a/client/tests/duid3_test.txt b/client/tests/duid3_test.txt
new file mode 100644
index 000000000..87c9f4d90
--- /dev/null
+++ b/client/tests/duid3_test.txt
@@ -0,0 +1,66 @@
+default-duid "\000\003\000\001\005\006\007\010\011\012";
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 22:11:53;
+  rebind 2 2014/05/13 22:11:53;
+  expire 2 2014/05/13 22:11:53;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+default-duid "\000\001";
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
+
+default-duid "\000\001\000\001\025\026\027\030\031\032\033\034\035\036";
diff --git a/client/tests/duid_unittest.c b/client/tests/duid_unittest.c
new file mode 100644
index 000000000..c2c89cd87
--- /dev/null
+++ b/client/tests/duid_unittest.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2014 by Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ *   Internet Systems Consortium, Inc.
+ *   950 Charter Street
+ *   Redwood City, CA 94063
+ *   <info@isc.org>
+ *   https://www.isc.org/
+ *
+ */
+
+#include "config.h"
+#include <atf-c.h>
+#include <omapip/omapip_p.h>
+#include "dhcpd.h"
+
+
+/* Tests to see if the routine to read a secondary lease file
+ * for the DUID works properly.  The tests:
+ * Test file x:
+ * no test file - should result in no duid
+ * Test filx 0:
+ * A test file but no DUID def, no duid
+ * Test file 1:
+ * Can it read a single DUID in the file?
+ * Test file 2:
+ * Can it find a second DUID in the file after a good lease and
+ * a badly formatted lease?
+ * Test file 3:
+ * Can it find a later DUID after a good one and a bad one?
+ * and to give a bit more coverage test file 1 should use LLT
+ * test file 2 should use LL and test file 3 should use LL for
+ * the first one and LLT for the third one.
+ */
+
+int duidx_len = 0;
+
+int duid0_len = 0;
+
+int duid1_len = 14;
+char duid1_data[] = {0, 1, 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+
+int duid2_len = 10;
+char duid2_data[] = {0, 3, 0, 1, 15, 16, 17, 18, 19, 20};
+
+int duid3_len = 14;
+char duid3_data[] = {0, 1, 0, 1, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30};
+
+ATF_TC(read_duid_test);
+
+ATF_TC_HEAD(read_duid_test, tc) {
+    atf_tc_set_md_var(tc, "descr", "read secondary file looking for duid");
+}
+
+ATF_TC_BODY(read_duid_test, tc) {
+
+    static const char *srcdir;
+    char duid_fname[1024];
+
+    /* Get the srcidr so we can find our test files */
+    if (atf_tc_has_config_var(tc, "srcdir"))
+	srcdir = atf_tc_get_config_var(tc, "srcdir");
+    /* point the duid file at our filename space
+       We will update it per test below */
+    path_dhclient_duid = duid_fname;
+
+    /* Initialize client globals. */
+    memset(&default_duid, 0, sizeof(default_duid));
+
+    /* Try to read a nonexistent test file
+     */
+    sprintf(duid_fname, "%s/duidx_test.txt", srcdir);
+    read_client_duid();
+    if (default_duid.len != duidx_len) {
+	atf_tc_fail("failed to properly read duid1");
+    }
+
+    /* Try to read test file 0
+     * This doesn't have a DUID.
+     */
+    sprintf(duid_fname, "%s/duid0_test.txt", srcdir);
+    read_client_duid();
+    if (default_duid.len != duid0_len) {
+	atf_tc_fail("failed to properly read duid0");
+    }
+
+    /* Try to read test file 1
+     * This has a single good LLT DUID in it
+     */
+    sprintf(duid_fname, "%s/duid1_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid1_len) ||
+	(memcmp(default_duid.data, duid1_data, duid1_len) != 0)) {
+	atf_tc_fail("failed to properly read duid1");
+    }
+
+    /* Try to read test file 2
+     * This has two good LL DUIDs in it with several good and bad leases between them.
+     */
+    sprintf(duid_fname, "%s/duid2_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid2_len) ||
+	(memcmp(default_duid.data, duid2_data, duid2_len) != 0)) {
+	atf_tc_fail("failed to properly read duid2");
+    }
+
+    /* Try to read test file 3
+     * This has a good LL DUID, a bad LLT DUID and a good LLT DUID
+     */
+    sprintf(duid_fname, "%s/duid3_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid3_len) ||
+	(memcmp(default_duid.data, duid3_data, duid3_len) != 0)) {
+	atf_tc_fail("failed to properly read duid3");
+    }
+
+}
+
+
+ATF_TP_ADD_TCS(tp) {
+    ATF_TP_ADD_TC(tp, read_duid_test);
+
+    return (atf_no_error());
+}
diff --git a/configure b/configure
index 862ebcb9e..22dbcfa11 100755
--- a/configure
+++ b/configure
@@ -6780,7 +6780,7 @@ $as_echo "#define FLEXIBLE_ARRAY_MEMBER /**/" >>confdefs.h
   fi
 
 
-ac_config_files="$ac_config_files Makefile client/Makefile common/Makefile common/tests/Makefile dhcpctl/Makefile dst/Makefile includes/Makefile omapip/Makefile relay/Makefile server/Makefile tests/Makefile server/tests/Makefile doc/devel/doxyfile"
+ac_config_files="$ac_config_files Makefile client/Makefile client/tests/Makefile common/Makefile common/tests/Makefile dhcpctl/Makefile dst/Makefile includes/Makefile omapip/Makefile relay/Makefile server/Makefile tests/Makefile server/tests/Makefile doc/devel/doxyfile"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -7520,6 +7520,7 @@ do
     "includes/config.h") CONFIG_HEADERS="$CONFIG_HEADERS includes/config.h" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
     "client/Makefile") CONFIG_FILES="$CONFIG_FILES client/Makefile" ;;
+    "client/tests/Makefile") CONFIG_FILES="$CONFIG_FILES client/tests/Makefile" ;;
     "common/Makefile") CONFIG_FILES="$CONFIG_FILES common/Makefile" ;;
     "common/tests/Makefile") CONFIG_FILES="$CONFIG_FILES common/tests/Makefile" ;;
     "dhcpctl/Makefile") CONFIG_FILES="$CONFIG_FILES dhcpctl/Makefile" ;;
diff --git a/configure.ac b/configure.ac
index 5a41407fb..4392a12cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -622,6 +622,7 @@ AC_C_FLEXIBLE_ARRAY_MEMBER
 AC_CONFIG_FILES([
   Makefile
   client/Makefile
+  client/tests/Makefile
   common/Makefile
   common/tests/Makefile
   dhcpctl/Makefile
diff --git a/includes/dhcpd.h b/includes/dhcpd.h
index 7eb7980e4..45bdd6ab8 100644
--- a/includes/dhcpd.h
+++ b/includes/dhcpd.h
@@ -2746,6 +2746,7 @@ extern char *path_dhclient_script;
 extern int interfaces_requested;
 extern struct data_string default_duid;
 extern int duid_type;
+extern const char *path_dhclient_duid;
 
 extern struct client_config top_level_config;
 
@@ -2920,6 +2921,7 @@ isc_result_t read_client_conf (void);
 int read_client_conf_file (const char *,
 			   struct interface_info *, struct client_config *);
 void read_client_leases (void);
+void read_client_duid (void);
 void parse_client_statement (struct parse *, struct interface_info *,
 			     struct client_config *);
 int parse_X (struct parse *, u_int8_t *, unsigned);