Rework patches. Add dhclient -B option description

0001-change-bug-url.patch

@@ -1,7 +1,7 @@
-From 31ef6eadb15c3773b81256a8617eccc7657fd2fd Mon Sep 17 00:00:00 2001
+From 23dfbc560028bf7429196db1a3826f8b80c19d3e Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:09:57 +0100
-Subject: [PATCH 01/21] change bug url
+Subject: [PATCH 01/26] change bug url
 Cc: pzhukov@redhat.com
 
 ---

0002-additional-dhclient-options.patch

@@ -1,7 +1,7 @@
-From 3a86bcb58a7c081df22b6f55e973d5e3c99065d8 Mon Sep 17 00:00:00 2001
+From a26161b0fd45cdbeed3038ac63ff04e3b727248f Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:19:47 +0100
-Subject: [PATCH 02/21] additional dhclient options
+Subject: [PATCH 02/26] additional dhclient options
 Cc: pzhukov@redhat.com
 
 ---

0003-Handle-releasing-interfaces-requested-by-sbin-ifup.patch

@@ -1,7 +1,7 @@
-From 692fd8b16ef6f12a57596351e930c65c68597bac Mon Sep 17 00:00:00 2001
+From af504e99abde04b881768d18eaa0054b36b16303 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:21:14 +0100
-Subject: [PATCH 03/21] Handle releasing interfaces requested by /sbin/ifup
+Subject: [PATCH 03/26] Handle releasing interfaces requested by /sbin/ifup
 Cc: pzhukov@redhat.com
 
 ---

0004-Support-unicast-BOOTP-for-IBM-pSeries-systems-and-ma.patch

@@ -1,7 +1,7 @@
-From 9dc17d6086bf140efda84ce434664b60ce2191a1 Mon Sep 17 00:00:00 2001
+From 7e8cc8388ac31c5c2b1a423c6b2da0491b19f6f9 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:22:41 +0100
-Subject: [PATCH 04/21] Support unicast BOOTP for IBM pSeries systems (and
+Subject: [PATCH 04/26] Support unicast BOOTP for IBM pSeries systems (and
  maybe others)
 Cc: pzhukov@redhat.com
 

0005-Change-default-requested-options.patch

@@ -1,7 +1,7 @@
-From ac21c8b966620cbe79be3508c024ae30f93d6266 Mon Sep 17 00:00:00 2001
+From a2a3554ff9e05d1a8e2c8aa843f1b6a33fce87e3 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:24:24 +0100
-Subject: [PATCH 05/21] Change default requested options
+Subject: [PATCH 05/26] Change default requested options
 Cc: pzhukov@redhat.com
 
 Add NIS domain, NIS servers, NTP servers, interface-mtu and domain-search

0006-Various-man-page-only-fixes.patch

@@ -1,7 +1,7 @@
-From dd3053e6f45ac1f149869b7ded3f539d6c046114 Mon Sep 17 00:00:00 2001
+From 846779467f7393b19e8d206405116e1e26e16efc Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:25:53 +0100
-Subject: [PATCH 06/21] Various man-page-only fixes
+Subject: [PATCH 06/26] Various man-page-only fixes
 Cc: pzhukov@redhat.com
 
 ---

0007-Change-paths-to-conform-to-our-standards.patch

@@ -1,7 +1,7 @@
-From bf4e3f1d181b5b4e6225fe5726c02420157433cc Mon Sep 17 00:00:00 2001
+From ac65289663532db0bc1de449ca2a0eb4c8c2ca6f Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:26:34 +0100
-Subject: [PATCH 07/21] Change paths to conform to our standards
+Subject: [PATCH 07/26] Change paths to conform to our standards
 Cc: pzhukov@redhat.com
 
 ---

0008-Make-sure-all-open-file-descriptors-are-closed-on-ex.patch

@@ -1,7 +1,7 @@
-From 26d34bc8e55c39ef84d580b6453c65b5cbeab8ff Mon Sep 17 00:00:00 2001
+From d2da34706f140101c34f6a9806c258411806a939 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:27:18 +0100
-Subject: [PATCH 08/21] Make sure all open file descriptors are closed-on-exec
+Subject: [PATCH 08/26] Make sure all open file descriptors are closed-on-exec
  for SELinux
 Cc: pzhukov@redhat.com
 

0009-Fix-garbage-in-format-string-error.patch

@@ -1,7 +1,7 @@
-From 9ffd73d22b1337aeedef751afd03822cc0a15014 Mon Sep 17 00:00:00 2001
+From a0a2186ce52a31357d4eb3c32d7d6887e4603814 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:28:13 +0100
-Subject: [PATCH 09/21] Fix 'garbage in format string' error
+Subject: [PATCH 09/26] Fix 'garbage in format string' error
 Cc: pzhukov@redhat.com
 
 RHBZ: 450042

0010-Handle-null-timeout.patch

@@ -1,7 +1,7 @@
-From e269e137c3b7d25a2d089be508e6769731618d54 Mon Sep 17 00:00:00 2001
+From ed7610cdb2e8ebdbaee618e477879e7e008d4f29 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:29:08 +0100
-Subject: [PATCH 10/21] Handle null timeout
+Subject: [PATCH 10/26] Handle null timeout
 Cc: pzhukov@redhat.com
 
 Handle cases in add_timeout() where the function is called with a NULL

0011-Drop-unnecessary-capabilities.patch

@@ -1,7 +1,7 @@
-From 291f738f341a78f8c7974a7603d1a2eaa01ebacc Mon Sep 17 00:00:00 2001
+From 3b37f4b7bb3a17f8bd655be919915a1912062ea6 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:30:28 +0100
-Subject: [PATCH 11/21] Drop unnecessary capabilities
+Subject: [PATCH 11/26] Drop unnecessary capabilities
 Cc: pzhukov@redhat.com
 
 dhclient (#517649, #546765), dhcpd/dhcrelay (#699713)

0012-RFC-3442-Classless-Static-Route-Option-for-DHCPv4-51.patch

@@ -1,7 +1,7 @@
-From 2756fcc3f88c27d0e12e72dbdd2906fbf45f2362 Mon Sep 17 00:00:00 2001
+From 01b1dcfef129a4eccfaf0f63a216774019f82dca Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:32:35 +0100
-Subject: [PATCH 12/21] RFC 3442 - Classless Static Route Option for DHCPv4
+Subject: [PATCH 12/26] RFC 3442 - Classless Static Route Option for DHCPv4
  (#516325)
 Cc: pzhukov@redhat.com
 

0013-DHCPv6-over-PPP-support-626514.patch

@@ -1,7 +1,7 @@
-From 43332b29f0c8fef3ddd225e31f5f2b4ff8273b36 Mon Sep 17 00:00:00 2001
+From 234747fbfd6c6429619ba843713d5b39fb4a513d Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:33:06 +0100
-Subject: [PATCH 13/21] DHCPv6 over PPP support (#626514)
+Subject: [PATCH 13/26] DHCPv6 over PPP support (#626514)
 Cc: pzhukov@redhat.com
 
 ---

0014-IPoIB-support-660681.patch

@@ -1,7 +1,7 @@
-From de8468cf16c0fa9d01412446fcf1d44ccd0fd411 Mon Sep 17 00:00:00 2001
+From 6d74c2d0ceadef2eb1c43c2da47f1d5b732adf8c Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:34:21 +0100
-Subject: [PATCH 14/21] IPoIB support (#660681)
+Subject: [PATCH 14/26] IPoIB support (#660681)
 Cc: pzhukov@redhat.com
 
 (Submitted to dhcp-bugs@isc.org - [ISC-Bugs #24249])

0015-Add-GUID-DUID-to-dhcpd-logs-1064416.patch

@@ -1,7 +1,7 @@
-From 7ac7d0b00874ee996c7ee75a595c029759368aad Mon Sep 17 00:00:00 2001
+From 3d3e442ed1316930a5360e4d5a56b46a42a29419 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:35:47 +0100
-Subject: [PATCH 15/21] Add GUID/DUID to dhcpd logs (#1064416)
+Subject: [PATCH 15/26] Add GUID/DUID to dhcpd logs (#1064416)
 Cc: pzhukov@redhat.com
 
 ---

0016-Turn-on-creating-sending-of-DUID.patch

@@ -1,7 +1,7 @@
-From 1f0473939bcb17095bbef48cd9a81105a3de9846 Mon Sep 17 00:00:00 2001
+From 2f6b827e89305adcff45288c632785ac054adb8e Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:36:30 +0100
-Subject: [PATCH 16/21] Turn on creating/sending of DUID
+Subject: [PATCH 16/26] Turn on creating/sending of DUID
 Cc: pzhukov@redhat.com
 
 as client identifier with DHCPv4 clients (#560361c#40, rfc4361)

0017-Send-unicast-request-release-via-correct-interface.patch

@@ -1,7 +1,7 @@
-From 8a2b491f79aab1f04feac89586dfab1e55b47adb Mon Sep 17 00:00:00 2001
+From 193c4d7631fd623efa601f52fdab6018bf8be771 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:39:36 +0100
-Subject: [PATCH 17/21] Send unicast request/release via correct interface
+Subject: [PATCH 17/26] Send unicast request/release via correct interface
 Cc: pzhukov@redhat.com
 
 (#800561, #1177351)

0018-No-subnet-declaration-for-iface-should-be-info-not-e.patch

@@ -1,7 +1,7 @@
-From 588ead2d9a9cfe70f14569a8e950c6c42f15c1e3 Mon Sep 17 00:00:00 2001
+From 2277d041692b8ebdf6b86d41e3a0bc0381cd1e47 Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:40:51 +0100
-Subject: [PATCH 18/21] No subnet declaration for <iface>' should be info, not
+Subject: [PATCH 18/26] No subnet declaration for <iface>' should be info, not
  error.
 Cc: pzhukov@redhat.com
 

0019-dhclient-write-DUID_LLT-even-in-stateless-mode-11563.patch

@@ -1,7 +1,7 @@
-From 07b333c48a2fc99d7d502a0c88907b38f61c6230 Mon Sep 17 00:00:00 2001
+From 6ea56e988df1da51f7d0bdd8984b38e40102c17b Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:41:14 +0100
-Subject: [PATCH 19/21] dhclient: write DUID_LLT even in stateless mode
+Subject: [PATCH 19/26] dhclient: write DUID_LLT even in stateless mode
  (#1156356)
 Cc: pzhukov@redhat.com
 

0020-Discover-all-hwaddress-for-xid-uniqueness.patch

@@ -1,7 +1,7 @@
-From f1467835402eee90a350a952f1a411f37475a9df Mon Sep 17 00:00:00 2001
+From 01ce61b8a0331a2f068ca2191bfb897b505c1b9d Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:42:50 +0100
-Subject: [PATCH 20/21] Discover all hwaddress for xid uniqueness
+Subject: [PATCH 20/26] Discover all hwaddress for xid uniqueness
 Cc: pzhukov@redhat.com
 
 ---

0021-Load-leases-DB-in-non-replay-mode-only.patch

@@ -1,7 +1,7 @@
-From 1c7b876dc558774c40a2a28da53c19c65e123124 Mon Sep 17 00:00:00 2001
+From e2de752020ea51428bbaaa7358f08632c42aa89d Mon Sep 17 00:00:00 2001
 From: Pavel Zhukov <pzhukov@redhat.com>
 Date: Thu, 21 Feb 2019 10:44:06 +0100
-Subject: [PATCH 21/21] Load leases DB in non-replay mode only
+Subject: [PATCH 21/26] Load leases DB in non-replay mode only
 Cc: pzhukov@redhat.com
 
 ---

0022-Backport-sd-notify-patch-for-systemd-support-1687040.patch

@@ -1,97 +0,0 @@
-From 5c6204bab7279050b78b3d03d1211e9d13d3fd71 Mon Sep 17 00:00:00 2001
-From: Pavel Zhukov <pzhukov@redhat.com>
-Date: Wed, 27 Mar 2019 09:59:20 +0100
-Subject: [PATCH] Backport sd-notify patch for systemd support (#1687040)
-Cc: pzhukov@redhat.com
-
----
- configure.ac     | 11 +++++++++++
- relay/dhcrelay.c | 12 ++++++++++++
- server/dhcpd.c   | 12 ++++++++++++
- 3 files changed, 35 insertions(+)
-
-diff --git a/configure.ac b/configure.ac
-index 15fc0d7..0c08000 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -1014,6 +1014,17 @@ if test x$ldap = xyes || test x$ldapcrypto = xyes || test x$ldap_gssapi = xyes;
-     AC_SUBST(LDAP_CFLAGS, [$LDAP_CFLAGS])
- fi
- 
-+AC_ARG_WITH(systemd,
-+        AC_HELP_STRING([--with-systemd],
-+                       [enable sending status notifications to systemd daemon (default is no)]),
-+        [systemd=$withval],
-+        [systemd=no])
-+
-+if test x$systemd = xyes ; then
-+   AC_CHECK_LIB(systemd, sd_notifyf, ,
-+                AC_MSG_FAILURE([*** systemd library not present - do you need to install systemd-libs package?]))
-+fi
-+
- # Append selected warning levels to CFLAGS before substitution (but after
- # AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[],[]) & etc).
- CFLAGS="$CFLAGS $STD_CWARNINGS"
-diff --git a/relay/dhcrelay.c b/relay/dhcrelay.c
-index 7b4f4f1..9eb5bfd 100644
---- a/relay/dhcrelay.c
-+++ b/relay/dhcrelay.c
-@@ -37,6 +37,10 @@
-    int keep_capabilities = 0;
- #endif
- 
-+#ifdef HAVE_LIBSYSTEMD
-+#include <systemd/sd-daemon.h>
-+#endif
-+
- TIME default_lease_time = 43200; /* 12 hours... */
- TIME max_lease_time = 86400; /* 24 hours... */
- struct tree_cache *global_options[256];
-@@ -845,6 +849,14 @@ main(int argc, char **argv) {
- 	}
- #endif
- 
-+#ifdef HAVE_LIBSYSTEMD
-+        /* We are ready to process incomming packets. Let's notify systemd */
-+        sd_notifyf(0, "READY=1\n"
-+                   "STATUS=Dispatching packets...\n"
-+                   "MAINPID=%lu",
-+                   (unsigned long) getpid());
-+#endif
-+
- 	/* Start dispatching packets and timeouts... */
- 	dispatch();
- 
-diff --git a/server/dhcpd.c b/server/dhcpd.c
-index 530a923..e06f6b4 100644
---- a/server/dhcpd.c
-+++ b/server/dhcpd.c
-@@ -60,6 +60,10 @@ gid_t set_gid = 0;
- struct class unknown_class;
- struct class known_class;
- 
-+#ifdef HAVE_LIBSYSTEMD
-+#include <systemd/sd-daemon.h>
-+#endif
-+
- struct iaddr server_identifier;
- int server_identifier_matched;
- 
-@@ -1057,6 +1061,14 @@ main(int argc, char **argv) {
- 	/* Log that we are about to start working */
- 	log_info("Server starting service.");
- 
-+#ifdef HAVE_LIBSYSTEMD
-+        /* We are ready to process incomming packets. Let's notify systemd */
-+        sd_notifyf(0, "READY=1\n"
-+                   "STATUS=Dispatching packets...\n"
-+                   "MAINPID=%lu",
-+                   (unsigned long) getpid());
-+#endif
-+
- 	/*
- 	 * Receive packets and dispatch them...
- 	 * dispatch() will never return.
--- 
-2.14.5
-

0022-dhclient-make-sure-link-local-address-is-ready-in-st.patch

@@ -0,0 +1,80 @@
+From 9975d198a2c02e32c31c3e0f43d2aa79dfa7f508 Mon Sep 17 00:00:00 2001
+From: Pavel Zhukov <pzhukov@redhat.com>
+Date: Thu, 28 Feb 2019 15:30:21 +0100
+Subject: [PATCH 22/26] dhclient: make sure link-local address is ready in
+ stateless mode
+Cc: pzhukov@redhat.com
+
+Bug-url: https://bugzilla.redhat.com/1263466
+---
+ client/dhclient.c | 30 ++++++++++++++++++++----------
+ 1 file changed, 20 insertions(+), 10 deletions(-)
+
+diff --git a/client/dhclient.c b/client/dhclient.c
+index 4e5546a..9b65438 100644
+--- a/client/dhclient.c
++++ b/client/dhclient.c
+@@ -937,6 +937,12 @@ main(int argc, char **argv) {
+ 
+ 	inaddr_any.s_addr = INADDR_ANY;
+ 
++	/* Discover all the network interfaces. */
++	discover_interfaces(DISCOVER_UNCONFIGURED);
++
++	/* Parse the dhclient.conf file. */
++	read_client_conf();
++
+ 	/* Stateless special case. */
+ 	if (stateless) {
+ 		if (release_mode || (wanted_ia_na > 0) ||
+@@ -953,12 +959,6 @@ main(int argc, char **argv) {
+ 		finish(0);
+ 	}
+ 
+-	/* Discover all the network interfaces. */
+-	discover_interfaces(DISCOVER_UNCONFIGURED);
+-
+-	/* Parse the dhclient.conf file. */
+-	read_client_conf();
+-
+ 	/* Parse any extra command line configuration arguments: */
+ 	if ((dhcp_client_identifier_arg != NULL) && (*dhcp_client_identifier_arg != '\0')) {
+ 		arg_conf_len = asprintf(&arg_conf, "send dhcp-client-identifier \"%s\";", dhcp_client_identifier_arg);
+@@ -1413,20 +1413,30 @@ void run_stateless(int exit_mode, u_int16_t port)
+ 	IGNORE_UNUSED(port);
+ #endif
+ 
+-	/* Discover the network interface. */
+-	discover_interfaces(DISCOVER_REQUESTED);
++	struct interface_info *ip;
+ 
+ 	if (!interfaces)
+ 		usage("No interfaces available for stateless command: %s", "-S");
+ 
+-	/* Parse the dhclient.conf file. */
+ #ifdef DHCP4o6
+ 	if (dhcpv4_over_dhcpv6) {
+ 		/* Mark we want to request IRT too! */
+ 		dhcpv4_over_dhcpv6++;
+ 	}
+ #endif
+-	read_client_conf();
++
++	for (ip = interfaces; ip; ip = ip->next) {
++		if ((interfaces_requested > 0) &&
++		    ((ip->flags & (INTERFACE_REQUESTED |
++				   INTERFACE_AUTOMATIC)) !=
++		     INTERFACE_REQUESTED))
++			continue;
++		script_init(ip->client, "PREINIT6", NULL);
++		script_go(ip->client);
++	}
++
++	/* Discover the network interface. */
++	discover_interfaces(DISCOVER_REQUESTED);
+ 
+ 	/* Parse the lease database. */
+ 	read_client_leases();
+-- 
+2.14.5
+

0023-option-97-pxe-client-id.patch

@@ -0,0 +1,247 @@
+From 6fd7894ea57791c8eee16c21d19da34b909e016e Mon Sep 17 00:00:00 2001
+From: Pavel Zhukov <pzhukov@redhat.com>
+Date: Thu, 28 Feb 2019 16:40:38 +0100
+Subject: [PATCH 23/26] option 97 - pxe-client-id
+Cc: pzhukov@redhat.com
+
+Bug-url: https://bugzilla.redhat.com/1058674
+ISC-Bugs #38110
+---
+ common/options.c        | 27 ++++++++++++++++++++-------
+ common/tables.c         |  3 ++-
+ includes/dhcp.h         |  1 +
+ server/dhcp.c           | 19 +++++++++++++++++++
+ server/dhcpd.conf.5     |  9 ++++++---
+ server/dhcpleasequery.c | 18 +++++++++++++++---
+ server/failover.c       |  3 +++
+ server/mdb.c            |  5 +++--
+ 8 files changed, 69 insertions(+), 16 deletions(-)
+
+diff --git a/common/options.c b/common/options.c
+index 3034cf0..686dd12 100644
+--- a/common/options.c
++++ b/common/options.c
+@@ -4465,13 +4465,26 @@ int validate_packet(struct packet *packet)
+ 				"a future version of ISC DHCP will reject this");
+ 		}
+ 	} else {
+-		/*
+-		 * If hlen is 0 we don't have any identifier, we warn the user
+-		 * but continue processing the packet as we can.
+-		 */
+-		if (packet->raw->hlen == 0) {
+-			log_debug("Received DHCPv4 packet without client-id"
+-				  " option and empty hlen field.");
++		oc = lookup_option (&dhcp_universe, packet->options,
++				    DHO_PXE_CLIENT_ID);
++		if (oc) {
++			/* Let's check if pxe-client-id is sane */
++			if ((oc->data.len < 2) ||
++			    (oc->data.data[0] == '\0' &&
++			     oc->data.len != 17)) {
++				log_debug("Dropped DHCPv4 packet with wrong "
++				    "(len == %d) pxe-client-id", oc->data.len);
++				return (0);
++			}
++		} else {
++			/*
++			 * If hlen is 0 we don't have any identifier, we warn the user
++			 * but continue processing the packet as we can.
++			 */
++			if (packet->raw->hlen == 0) {
++				log_debug("Received DHCPv4 packet without client-id"
++						" option and empty hlen field.");
++			}
+ 		}
+ 	}
+ 
+diff --git a/common/tables.c b/common/tables.c
+index f1be07d..4419220 100644
+--- a/common/tables.c
++++ b/common/tables.c
+@@ -196,8 +196,9 @@ static struct option dhcp_options[] = {
+ 	/* Defined by RFC 4578 */
+ 	{ "pxe-system-type", "Sa",		&dhcp_universe,  93, 1 },
+ 	{ "pxe-interface-id", "BBB",		&dhcp_universe,  94, 1 },
+-	{ "pxe-client-id", "BX",		&dhcp_universe,  97, 1 },
+ #endif
++	{ "pxe-client-id", "BX",		&dhcp_universe,  97, 1 },
++
+ 	{ "uap-servers", "t",			&dhcp_universe,  98, 1 },
+ #if defined(RFC4776_OPTIONS)
+         { "geoconf-civic", "X",                 &dhcp_universe, 99, 1 },
+diff --git a/includes/dhcp.h b/includes/dhcp.h
+index 4cc547a..4eb9791 100644
+--- a/includes/dhcp.h
++++ b/includes/dhcp.h
+@@ -158,6 +158,7 @@ struct dhcp_packet {
+ #define DHO_AUTHENTICATE			90  /* RFC3118, was 210 */
+ #define DHO_CLIENT_LAST_TRANSACTION_TIME	91
+ #define DHO_ASSOCIATED_IP			92
++#define DHO_PXE_CLIENT_ID			97  /* RFC4578 */
+ #define DHO_SUBNET_SELECTION			118 /* RFC3011! */
+ #define DHO_DOMAIN_SEARCH			119 /* RFC3397 */
+ #define DHO_CLASSLESS_STATIC_ROUTES		121 /* RFC3442 */
+diff --git a/server/dhcp.c b/server/dhcp.c
+index 0582c4c..4e86262 100644
+--- a/server/dhcp.c
++++ b/server/dhcp.c
+@@ -222,6 +222,10 @@ dhcp (struct packet *packet) {
+ 		if (lease -> uid_len) {
+ 			oc = lookup_option (&dhcp_universe, packet -> options,
+ 					    DHO_DHCP_CLIENT_IDENTIFIER);
++			if (!oc)
++				oc = lookup_option (&dhcp_universe,
++						    packet -> options,
++						    DHO_PXE_CLIENT_ID);
+ 			if (!oc)
+ 				goto nolease;
+ 
+@@ -820,6 +824,9 @@ void dhcprelease (packet, ms_nulltp)
+ 
+ 	oc = lookup_option (&dhcp_universe, packet -> options,
+ 			    DHO_DHCP_CLIENT_IDENTIFIER);
++	if (!oc)
++		oc = lookup_option (&dhcp_universe, packet -> options,
++				    DHO_PXE_CLIENT_ID);
+ 	memset (&data, 0, sizeof data);
+ 	if (oc &&
+ 	    evaluate_option_cache (&data, packet, (struct lease *)0,
+@@ -1331,6 +1338,9 @@ void dhcpinform (packet, ms_nulltp)
+          */
+ 	oc = lookup_option(&dhcp_universe, packet->options,
+ 			   DHO_DHCP_CLIENT_IDENTIFIER);
++	if (!oc)
++		oc = lookup_option (&dhcp_universe, packet -> options,
++				    DHO_PXE_CLIENT_ID);
+ 	memset(&d1, 0, sizeof(d1));
+ 	if (oc &&
+ 	    evaluate_option_cache(&d1, packet, NULL, NULL,
+@@ -2441,6 +2451,9 @@ void ack_lease (packet, lease, offer, when, msg, ms_nulltp, hp)
+ 		   can be used. */
+ 		oc = lookup_option (&dhcp_universe, packet -> options,
+ 				    DHO_DHCP_CLIENT_IDENTIFIER);
++		if (!oc)
++			oc = lookup_option (&dhcp_universe, packet -> options,
++					    DHO_PXE_CLIENT_ID);
+ 		if (oc &&
+ 		    evaluate_option_cache (&d1, packet, lease,
+ 					   (struct client_state *)0,
+@@ -3033,6 +3046,9 @@ void ack_lease (packet, lease, offer, when, msg, ms_nulltp, hp)
+ 		/* Record the uid, if given... */
+ 		oc = lookup_option (&dhcp_universe, packet -> options,
+ 				    DHO_DHCP_CLIENT_IDENTIFIER);
++		if (!oc)
++			oc = lookup_option (&dhcp_universe, packet -> options,
++					    DHO_PXE_CLIENT_ID);
+ 		if (oc &&
+ 		    evaluate_option_cache(&d1, packet, lease, NULL,
+ 					  packet->options, state->options,
+@@ -4150,6 +4166,9 @@ int find_lease (struct lease **lp,
+ 	   specified unique client identifier. */
+ 	oc = lookup_option (&dhcp_universe, packet -> options,
+ 			    DHO_DHCP_CLIENT_IDENTIFIER);
++	if (!oc)
++		oc = lookup_option (&dhcp_universe, packet -> options,
++				    DHO_PXE_CLIENT_ID);
+ 	memset (&client_identifier, 0, sizeof client_identifier);
+ 	if (oc &&
+ 	    evaluate_option_cache (&client_identifier,
+diff --git a/server/dhcpd.conf.5 b/server/dhcpd.conf.5
+index 89b5540..4751a8b 100644
+--- a/server/dhcpd.conf.5
++++ b/server/dhcpd.conf.5
+@@ -1664,10 +1664,12 @@ should be a name identifying the host.  If a \fIhostname\fR option is
+ not specified for the host, \fIhostname\fR is used.
+ .PP
+ \fIHost\fR declarations are matched to actual DHCP or BOOTP clients
+-by matching the \fRdhcp-client-identifier\fR option specified in the
++by matching the \fIdhcp-client-identifier\fR or \fIpxe-client-id\fR
++options specified in the
+ \fIhost\fR declaration to the one supplied by the client, or, if the
+ \fIhost\fR declaration or the client does not provide a
+-\fRdhcp-client-identifier\fR option, by matching the \fIhardware\fR
++\fIdhcp-client-identifier\fR or \fIpxe-client-id\fR options,
++by matching the \fIhardware\fR
+ parameter in the \fIhost\fR declaration to the network hardware
+ address supplied by the client.  BOOTP clients do not normally
+ provide a \fIdhcp-client-identifier\fR, so the hardware address must
+@@ -1679,7 +1681,8 @@ to identify hosts.
+ .PP
+ Please be aware that
+ .B only
+-the \fIdhcp-client-identifier\fR option and the hardware address can be
++the \fIdhcp-client-identifier\fR and \fIpxe-client-id\fR
++options and the hardware address can be
+ used to match a host declaration, or the \fIhost-identifier option\fR
+ parameter for DHCPv6 servers.  For example, it is not possible to
+ match a host declaration to a \fIhost-name\fR option.  This is
+diff --git a/server/dhcpleasequery.c b/server/dhcpleasequery.c
+index 7be0788..2fee698 100644
+--- a/server/dhcpleasequery.c
++++ b/server/dhcpleasequery.c
+@@ -276,7 +276,7 @@ dhcpleasequery(struct packet *packet, int ms_nulltp) {
+ 		 */
+ 
+ 		memset(&uid, 0, sizeof(uid));
+-		if (get_option(&uid, 
++		i = get_option(&uid,
+ 			       &dhcp_universe,
+ 			       packet,
+ 			       NULL,
+@@ -286,8 +286,20 @@ dhcpleasequery(struct packet *packet, int ms_nulltp) {
+ 			       packet->options, 
+ 			       &global_scope,
+ 			       DHO_DHCP_CLIENT_IDENTIFIER,
+-			       MDL)) {
+-
++			       MDL);
++		if (!i)
++			i = get_option(&uid,
++				       &dhcp_universe,
++				       packet,
++				       NULL,
++				       NULL,
++				       packet->options,
++				       NULL,
++				       packet->options,
++				       &global_scope,
++				       DHO_PXE_CLIENT_ID,
++				       MDL);
++		if (i) {
+ 			snprintf(dbg_info, 
+ 				 sizeof(dbg_info), 
+ 				 "client-id %s",
+diff --git a/server/failover.c b/server/failover.c
+index 72f7b00..40fa691 100644
+--- a/server/failover.c
++++ b/server/failover.c
+@@ -5988,6 +5988,9 @@ int load_balance_mine (struct packet *packet, dhcp_failover_state_t *state)
+ 
+ 	oc = lookup_option(&dhcp_universe, packet->options,
+ 			   DHO_DHCP_CLIENT_IDENTIFIER);
++	if (!oc)
++		oc = lookup_option(&dhcp_universe, packet -> options,
++				    DHO_PXE_CLIENT_ID);
+ 	memset(&ds, 0, sizeof ds);
+ 	if (oc &&
+ 	    evaluate_option_cache(&ds, packet, NULL, NULL,
+diff --git a/server/mdb.c b/server/mdb.c
+index 052df67..8851366 100644
+--- a/server/mdb.c
++++ b/server/mdb.c
+@@ -129,8 +129,9 @@ static int find_uid_statement (struct executable_statement *esp,
+ 	    esp -> data.option &&
+ 	    (esp -> data.option -> option -> universe ==
+ 	     &dhcp_universe) &&
+-	    (esp -> data.option -> option -> code ==
+-	     DHO_DHCP_CLIENT_IDENTIFIER)) {
++	    ((esp -> data.option -> option -> code ==
++						DHO_DHCP_CLIENT_IDENTIFIER) ||
++	     (esp -> data.option -> option -> code == DHO_PXE_CLIENT_ID))) {
+ 		if (condp) {
+ 			log_error ("dhcp client identifier may not be %s",
+ 				   "specified conditionally.");
+-- 
+2.14.5
+

0024-Detect-system-time-changes.patch

@@ -1,8 +1,21 @@
+From 41c6032ace65119e6a400365f7e90283c930afd4 Mon Sep 17 00:00:00 2001
+From: Pavel Zhukov <pzhukov@redhat.com>
+Date: Tue, 22 Oct 2019 16:23:01 +0200
+Subject: [PATCH 24/26] Detect system time changes
+Cc: pzhukov@redhat.com
+
+---
+ client/dhclient.c |  6 ++++++
+ common/dispatch.c | 11 ++++++++++-
+ includes/dhcpd.h  |  3 ++-
+ server/dhcpd.c    |  6 ++++++
+ 4 files changed, 24 insertions(+), 2 deletions(-)
+
 diff --git a/client/dhclient.c b/client/dhclient.c
-index 4e5546a..6085b8e 100644
+index 9b65438..44d508a 100644
 --- a/client/dhclient.c
 +++ b/client/dhclient.c
-@@ -5398,6 +5398,12 @@ isc_result_t dhcp_set_control_state (control_object_state_t oldstate,
+@@ -5408,6 +5408,12 @@ isc_result_t dhcp_set_control_state (control_object_state_t oldstate,
  		  case server_awaken:
  		    state_reboot (client);
  		    break;
@@ -59,10 +72,10 @@ index 635c510..ec6c227 100644
  
  typedef struct {
 diff --git a/server/dhcpd.c b/server/dhcpd.c
-index e06f6b4..778ef8d 100644
+index 530a923..4aef16b 100644
 --- a/server/dhcpd.c
 +++ b/server/dhcpd.c
-@@ -1779,6 +1779,12 @@ isc_result_t dhcp_set_control_state (control_object_state_t oldstate,
+@@ -1767,6 +1767,12 @@ isc_result_t dhcp_set_control_state (control_object_state_t oldstate,
  {
  	struct timeval tv;
  

0025-bind-Detect-system-time-changes.patch

@@ -1,3 +1,18 @@
+From 5917ba14ccf7c7cc2eadf8b6cc666f8be4d2d2a4 Mon Sep 17 00:00:00 2001
+From: Pavel Zhukov <pzhukov@redhat.com>
+Date: Tue, 22 Oct 2019 16:23:24 +0200
+Subject: [PATCH 25/26] bind: Detect system time changes
+Cc: pzhukov@redhat.com
+
+---
+ bind/bind-9.11.2-P1/lib/isc/include/isc/result.h   |  4 +--
+ bind/bind-9.11.2-P1/lib/isc/include/isc/util.h     |  4 +++
+ bind/bind-9.11.2-P1/lib/isc/result.c               |  2 ++
+ bind/bind-9.11.2-P1/lib/isc/unix/app.c             | 41 ++++++++++++++++++++--
+ .../bind-9.11.2-P1/lib/isc/unix/include/isc/time.h | 20 +++++++++++
+ bind/bind-9.11.2-P1/lib/isc/unix/time.c            | 22 ++++++++++++
+ 6 files changed, 89 insertions(+), 4 deletions(-)
+
 diff --git a/bind/bind-9.11.2-P1/lib/isc/include/isc/result.h b/bind/bind-9.11.2-P1/lib/isc/include/isc/result.h
 index 6f7ecf2..c7ef53c 100644
 --- a/bind/bind-9.11.2-P1/lib/isc/include/isc/result.h
@@ -179,3 +194,6 @@ index 5900846..1197337 100644
 +  
 +};
 +#endif
+-- 
+2.14.5
+

0026-Add-dhclient-5-B-option-description.patch

@@ -0,0 +1,33 @@
+From 7cae2da1c50c6680b92ca58eb03f9d59315010ba Mon Sep 17 00:00:00 2001
+From: Pavel Zhukov <pzhukov@redhat.com>
+Date: Tue, 22 Oct 2019 16:28:04 +0200
+Subject: [PATCH 26/26] Add dhclient(5) -B option description
+Cc: pzhukov@redhat.com
+
+Bug-Url: https://bugzilla.redhat.com/1764088
+---
+ client/dhclient.8 | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/client/dhclient.8 b/client/dhclient.8
+index 0145b9f..b466ac7 100644
+--- a/client/dhclient.8
++++ b/client/dhclient.8
+@@ -552,6 +552,14 @@ Path to the network configuration script invoked by
+ when it gets a lease.  If unspecified, the default
+ .B CLIENTBINDIR/dhclient-script
+ is used.  See \fBdhclient-script(8)\fR for a description of this file.
++.TP
++.BI \-B
++statement instructs dhclient to always set the bootp broadcast flag in
++request packets, so that servers will always broadcast replies.
++This is equivalent to supplying the dhclient -B argument, and has
++the same effect as specifying 'always-broadcast' in the server's dhcpd.conf.
++This option is provided as an extension to enable dhclient to work
++on IBM s390 Linux guests.
+ .PP
+ .SH PORTS
+ During operations the client may use multiple UDP ports
+-- 
+2.14.5
+

dhcp.spec

@@ -33,6 +33,10 @@ Source6:  dhcpd.service
 Source7:  dhcpd6.service
 Source8:  dhcrelay.service
 
+
+
+
+
 Patch1 : 0001-change-bug-url.patch
 Patch2 : 0002-additional-dhclient-options.patch
 Patch3 : 0003-Handle-releasing-interfaces-requested-by-sbin-ifup.patch
@@ -54,10 +58,11 @@ Patch18: 0018-No-subnet-declaration-for-iface-should-be-info-not-e.patch
 Patch19 : 0019-dhclient-write-DUID_LLT-even-in-stateless-mode-11563.patch
 Patch20 : 0020-Discover-all-hwaddress-for-xid-uniqueness.patch
 Patch21 : 0021-Load-leases-DB-in-non-replay-mode-only.patch
-Patch22: 0022-Backport-sd-notify-patch-for-systemd-support-1687040.patch
+Patch22 : 0022-dhclient-make-sure-link-local-address-is-ready-in-st.patch
-
+Patch23 : 0023-option-97-pxe-client-id.patch
-Patch23: 0023-Detect-system-time-jumps.patch
+Patch24 : 0024-Detect-system-time-changes.patch
-Patch24: 0024-bind-Detect-system-time-jumps.patch
+Patch25 : 0025-bind-Detect-system-time-changes.patch
+Patch26 : 0026-Add-dhclient-5-B-option-description.patch