diff -up dhcp-4.2.1b1/client/dhclient.8.man dhcp-4.2.1b1/client/dhclient.8

--- dhcp-4.2.1b1/client/dhclient.8.man	2010-07-14 22:09:34.000000000 +0200

+++ dhcp-4.2.1b1/client/dhclient.8	2011-01-27 18:19:07.000000000 +0100

@@ -115,6 +115,33 @@ dhclient - Dynamic Host Configuration Pr

 .B -w

 ]

 [

+.B -B

+]

+[

+.B -I

+.I dhcp-client-identifier

+]

+[

+.B -H

+.I host-name

+]

+[

+.B -F

+.I fqdn.fqdn

+]

+[

+.B -V

+.I vendor-class-identifier

+]

+[

+.B -R

+.I request-option-list

+]

+[

+.B -timeout

+.I timeout

+]

+[

 .B -v

 ]

 [

@@ -264,6 +291,69 @@ not to exit when it doesn't find any suc

 program can then be used to notify the client when a network interface

 has been added or removed, so that the client can attempt to configure an IP

 address on that interface.

+

+.TP

+.BI \-B

+Set the BOOTP broadcast flag in request packets so servers will always

+broadcast replies.

+

+.TP

+.BI \-I\ <dhcp-client-identifier>

+Specify the dhcp-client-identifier option to send to the DHCP server.

+

+.TP

+.BI \-H\ <host-name>

+Specify the host-name option to send to the DHCP server.  The host-name

+string only contains the client's hostname prefix, to which the server will

+append the ddns-domainname or domain-name options, if any, to derive the

+fully qualified domain name of the client.  The

+.B -H

+option cannot be used with the

+.B -F

+option.

+

+.TP

+.BI \-F\ <fqdn.fqdn>

+Specify the fqdn.fqdn option to send to the DHCP server.  This option cannot

+be used with the

+.B -H

+option.  The fqdn.fqdn option must specify the complete domain name of the

+client host, which the server may use for dynamic DNS updates.

+

+.TP

+.BI \-V\ <vendor-class-identifier>

+Specify the vendor-class-identifier option to send to the DHCP server.

+

+.TP

+.BI \-R\ <option>[,<option>...]

+Specify the list of options the client is to request from the server.  The

+option list must be a single string consisting of option names separated

+by at least one command and optional space characters.  The default option

+list is:

+

+.BR

+    subnet-mask, broadcast-address, time-offset, routers,

+.BR

+    domain-search, domain-name, domain-name-servers, host-name, 

+.BR

+    nis-domain, nis-servers, ntp-servers, interface-mtu

+

+.TP

+.B -R

+option does not append options to the default request, it overrides the

+default request list.  Keep this in mind if you want to request an

+additional option besides the default request list.  You will have to

+specify all option names for the

+.B -R

+parameter.

+

+.TP

+.BI \-timeout\ <timeout>

+Specify the time after which

+.B dhclient

+will decide that no DHCP servers can be contacted when no responses have been

+received.

+

 .TP

 .BI \-n

 Do not configure any interfaces.  This is most likely to be useful in

diff -up dhcp-4.2.4-P2/client/clparse.c.options dhcp-4.2.4-P2/client/clparse.c

--- dhcp-4.2.4-P2/client/clparse.c.options	2012-08-24 21:11:21.000000000 +0200

+++ dhcp-4.2.4-P2/client/clparse.c	2012-09-26 10:34:27.140049896 +0200

@@ -154,6 +154,7 @@ isc_result_t read_client_conf ()

 	/* Requested lease time, used by DHCPv6 (DHCPv4 uses the option cache)

 	 */

 	top_level_config.requested_lease = 7200;

+	top_level_config.bootp_broadcast_always = 0;

 	group_allocate (&top_level_config.on_receipt, MDL);

 	if (!top_level_config.on_receipt)

@@ -320,7 +321,8 @@ void read_client_leases ()

 	interface-declaration |

 	LEASE client-lease-statement |

 	ALIAS client-lease-statement |

-	KEY key-definition */

+	KEY key-definition |

+	BOOTP_BROADCAST_ALWAYS */

 void parse_client_statement (cfile, ip, config)

 	struct parse *cfile;

@@ -739,6 +741,12 @@ void parse_client_statement (cfile, ip,

 		parse_reject_statement (cfile, config);

 		return;

+	      case BOOTP_BROADCAST_ALWAYS:

+		token = next_token(&val, (unsigned*)0, cfile);

+		config -> bootp_broadcast_always = 1;

+		parse_semi (cfile);

+		return;

+

 	      default:

 		lose = 0;

 		stmt = (struct executable_statement *)0;

diff -up dhcp-4.2.4-P2/client/dhclient.c.options dhcp-4.2.4-P2/client/dhclient.c

--- dhcp-4.2.4-P2/client/dhclient.c.options	2012-08-28 04:13:03.000000000 +0200

+++ dhcp-4.2.4-P2/client/dhclient.c	2012-09-26 10:36:10.396967531 +0200

@@ -39,6 +39,12 @@

 #include <limits.h>

 #include <dns/result.h>

+/*

+ * Defined in stdio.h when _GNU_SOURCE is set, but we don't want to define

+ * that when building ISC code.

+ */

+extern int asprintf(char **strp, const char *fmt, ...);

+

 TIME default_lease_time = 43200; /* 12 hours... */

 TIME max_lease_time = 86400; /* 24 hours... */

@@ -87,6 +93,9 @@ int wanted_ia_na = -1;		/* the absolute

 int wanted_ia_ta = 0;

 int wanted_ia_pd = 0;

 char *mockup_relay = NULL;

+int bootp_broadcast_always = 0;

+

+extern struct option *default_requested_options[];

 void run_stateless(int exit_mode);

@@ -123,6 +132,15 @@ main(int argc, char **argv) {

 	int local_family_set = 0;

 #endif /* DHCPv6 */

 	char *s;

+	char *dhcp_client_identifier_arg = NULL;

+	char *dhcp_host_name_arg = NULL;

+	char *dhcp_fqdn_arg = NULL;

+	char *dhcp_vendor_class_identifier_arg = NULL;

+	char *dhclient_request_options = NULL;

+

+	int timeout_arg = 0;

+	char *arg_conf = NULL;

+	int arg_conf_len = 0;

 	/* Initialize client globals. */

 	memset(&default_duid, 0, sizeof(default_duid));

@@ -310,6 +328,88 @@ main(int argc, char **argv) {

 		} else if (!strcmp(argv[i], "--version")) {

 			log_info("isc-dhclient-%s", PACKAGE_VERSION);

 			exit(0);

+		} else if (!strcmp(argv[i], "-I")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			if (strlen(argv[i]) >= DHCP_MAX_OPTION_LEN) {

+				log_error("-I option dhcp-client-identifier string \"%s\" is too long - maximum length is: %d", argv[i], DHCP_MAX_OPTION_LEN-1);

+				exit(1);

+			}

+

+			dhcp_client_identifier_arg = argv[i];

+		} else if (!strcmp(argv[i], "-B")) {

+			bootp_broadcast_always = 1;

+		} else if (!strcmp(argv[i], "-H")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			if (strlen(argv[i]) >= DHCP_MAX_OPTION_LEN) {

+				log_error("-H option host-name string \"%s\" is too long - maximum length is: %d", argv[i], DHCP_MAX_OPTION_LEN-1);

+				exit(1);

+			}

+

+			if (dhcp_host_name_arg != NULL) {

+				log_error("The -H <host-name> and -F <fqdn> arguments are mutually exclusive");

+				exit(1);

+			}

+

+			dhcp_host_name_arg = argv[i];

+		} else if (!strcmp(argv[i], "-F")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			if (strlen(argv[i]) >= DHCP_MAX_OPTION_LEN) {

+				log_error("-F option fqdn.fqdn string \"%s\" is too long - maximum length is: %d", argv[i], DHCP_MAX_OPTION_LEN-1);

+				exit(1);

+			}

+

+			if (dhcp_fqdn_arg != NULL) {

+				log_error("Only one -F <fqdn> argument can be specified");

+				exit(1);

+			}

+

+			if (dhcp_host_name_arg != NULL) {

+				log_error("The -F <fqdn> and -H <host-name> arguments are mutually exclusive");

+				exit(1);

+			}

+

+			dhcp_fqdn_arg = argv[i];

+		} else if (!strcmp(argv[i], "-timeout")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			if ((timeout_arg = atoi(argv[i])) <= 0) {

+				log_error("timeout option must be > 0 - bad value: %s",argv[i]);

+				exit(1);

+			}

+		} else if (!strcmp(argv[i], "-V")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			if (strlen(argv[i]) >= DHCP_MAX_OPTION_LEN) {

+				log_error("-V option vendor-class-identifier string \"%s\" is too long - maximum length is: %d", argv[i], DHCP_MAX_OPTION_LEN-1);

+				exit(1);

+			}

+

+			dhcp_vendor_class_identifier_arg = argv[i];

+		} else if (!strcmp(argv[i], "-R")) {

+			if ((++i == argc) || (argv[i] == NULL) || (*(argv[i])=='\0')) {

+				usage();

+				exit(1);

+			}

+

+			dhclient_request_options = argv[i];

 		} else if (argv[i][0] == '-') {

 		    usage();

 		} else if (interfaces_requested < 0) {

@@ -484,6 +584,156 @@ main(int argc, char **argv) {

 	/* 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);

+

+		if ((arg_conf == 0) || (arg_conf_len <= 0))

+			log_fatal("Unable to send -I option dhcp-client-identifier");

+	}

+

+	if ((dhcp_host_name_arg != NULL) && (*dhcp_host_name_arg != '\0')) {

+		if (arg_conf == 0) {

+			arg_conf_len = asprintf(&arg_conf, "send host-name \"%s\";", dhcp_host_name_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to send -H option host-name");

+		} else {

+			char *last_arg_conf = arg_conf;

+			arg_conf = NULL;

+			arg_conf_len = asprintf(&arg_conf, "%s\nsend host-name \"%s\";", last_arg_conf, dhcp_host_name_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to send -H option host-name");

+

+			free(last_arg_conf);

+		}

+	}

+

+	if ((dhcp_fqdn_arg != NULL) && (*dhcp_fqdn_arg != '\0')) {

+		if (arg_conf == 0) {

+			arg_conf_len = asprintf(&arg_conf,  "send fqdn.fqdn \"%s\";", dhcp_fqdn_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to send -F option fqdn.fqdn");

+		} else {

+			char *last_arg_conf = arg_conf;

+			arg_conf = NULL;

+			arg_conf_len = asprintf(&arg_conf, "%s\nsend fqdn.fqdn \"%s\";", last_arg_conf, dhcp_fqdn_arg);

+

+			if ((arg_conf == 0)  || (arg_conf_len <= 0))

+				log_fatal("Unable to send -F option fqdn.fqdn");

+

+			free(last_arg_conf);

+		}

+	}

+

+	if (timeout_arg) {

+		if (arg_conf == 0) {

+			arg_conf_len = asprintf(&arg_conf,  "timeout %d;", timeout_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to process -timeout timeout argument");

+		} else {

+			char *last_arg_conf = arg_conf;

+			arg_conf = NULL;

+			arg_conf_len = asprintf(&arg_conf, "%s\ntimeout %d;", last_arg_conf, timeout_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len == 0))

+				log_fatal("Unable to process -timeout timeout argument");

+

+			free(last_arg_conf);

+		}

+	}

+

+	if ((dhcp_vendor_class_identifier_arg != NULL) && (*dhcp_vendor_class_identifier_arg != '\0')) {

+		if (arg_conf == 0) {

+			arg_conf_len = asprintf(&arg_conf,  "send vendor-class-identifier \"%s\";", dhcp_vendor_class_identifier_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to send -V option vendor-class-identifier");

+		} else {

+			char *last_arg_conf = arg_conf;

+			arg_conf = NULL;

+			arg_conf_len = asprintf(&arg_conf, "%s\nsend vendor-class-identifier \"%s\";", last_arg_conf, dhcp_vendor_class_identifier_arg);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to send -V option vendor-class-identifier");

+

+			free(last_arg_conf);

+		}

+	}

+

+	if (dhclient_request_options != NULL) {

+		if (arg_conf == 0) {

+			arg_conf_len = asprintf(&arg_conf,  "request %s;", dhclient_request_options);

+

+			if ((arg_conf == 0) || (arg_conf_len <= 0))

+				log_fatal("Unable to parse -R <request options list> argument");

+		} else {

+			char *last_arg_conf = arg_conf;

+			arg_conf = NULL;

+			arg_conf_len = asprintf(&arg_conf, "%s\nrequest %s;", last_arg_conf, dhclient_request_options);

+

+			if ((arg_conf == 0)  || (arg_conf_len <= 0))

+				log_fatal("Unable to parse -R <request options list> argument");

+

+			free(last_arg_conf);

+		}

+	}

+

+	if (arg_conf) {

+		if (arg_conf_len == 0)

+			if ((arg_conf_len = strlen(arg_conf)) == 0)

+				/* huh ? cannot happen ! */

+				log_fatal("Unable to process -I/-H/-F/-timeout/-V/-R configuration arguments");

+

+		/* parse the extra dhclient.conf configuration arguments

+		 * into top level config: */

+		struct parse *cfile = (struct parse *)0;

+		const char *val = NULL;

+		int token;

+

+		status = new_parse(&cfile, -1, arg_conf, arg_conf_len, "extra dhclient -I/-H/-F/-timeout/-V/-R configuration arguments", 0);

+

+		if ((status != ISC_R_SUCCESS) || (cfile -> warnings_occurred))

+			log_fatal("Cannot parse -I/-H/-F/-timeout/-V/-R configuration arguments !");

+		/* more detailed parse failures will be logged */

+

+		do {

+			token = peek_token(&val, (unsigned *)0, cfile);

+			if (token == END_OF_FILE)

+				break;

+

+			parse_client_statement(cfile, (struct interface_info *)0, &top_level_config);

+		} while (1);

+

+		if (cfile -> warnings_occurred)

+			log_fatal("Cannot parse -I/-H/-F/-timeout/-V/-R configuration arguments !");

+		end_parse(&cfile);

+

+		if (timeout_arg) {

+			/* we just set the toplevel timeout, but per-client

+			 * timeouts may still be at defaults.

+			 */

+			for (ip=interfaces; ip; ip = ip->next) {

+				if (ip->client->config->timeout == 60)

+					ip->client->config->timeout = timeout_arg;

+			}

+		}

+

+		if ((dhclient_request_options != 0) && (top_level_config.requested_options != default_requested_options)) {

+			for (ip=interfaces; ip; ip = ip->next) {

+				if (ip->client->config->requested_options == default_requested_options)

+					ip->client->config->requested_options = top_level_config.requested_options;

+			}

+		}

+

+		free(arg_conf);

+		arg_conf = NULL;

+		arg_conf_len = 0;

+	}

+

 	/* Parse the lease database. */

 	read_client_leases();

@@ -715,6 +965,10 @@ static void usage()

 		  "                [-s server-addr] [-cf config-file] "

 		  "[-lf lease-file]\n"

 		  "                [-pf pid-file] [--no-pid] [-e VAR=val]\n"

+		  "                [-I <dhcp-client-identifier>] [-B]\n"

+		  "                [-H <host-name> | -F <fqdn.fqdn>] [-timeout <timeout>]\n"

+		  "                [-V <vendor-class-identifier>]\n"

+		  "                [-R <request option list>]\n"

 		  "                [-sf script-file] [interface]");

 }

@@ -2421,7 +2675,8 @@ void make_discover (client, lease)

 	client -> packet.xid = random ();

 	client -> packet.secs = 0; /* filled in by send_discover. */

-	if (can_receive_unicast_unconfigured (client -> interface))

+	if ((!(bootp_broadcast_always || client->config->bootp_broadcast_always))

+	    && can_receive_unicast_unconfigured(client->interface))

 		client -> packet.flags = 0;

 	else

 		client -> packet.flags = htons (BOOTP_BROADCAST);

@@ -2505,7 +2760,9 @@ void make_request (client, lease)

 	} else {

 		memset (&client -> packet.ciaddr, 0,

 			sizeof client -> packet.ciaddr);

-		if (can_receive_unicast_unconfigured (client -> interface))

+		if ((!(bootp_broadcast_always ||

+		    client ->config->bootp_broadcast_always)) &&

+		    can_receive_unicast_unconfigured (client -> interface))

 			client -> packet.flags = 0;

 		else

 			client -> packet.flags = htons (BOOTP_BROADCAST);

@@ -2567,7 +2824,8 @@ void make_decline (client, lease)

 	client -> packet.hops = 0;

 	client -> packet.xid = client -> xid;

 	client -> packet.secs = 0; /* Filled in by send_request. */

-	if (can_receive_unicast_unconfigured (client -> interface))

+	if ((!(bootp_broadcast_always || client->config-> bootp_broadcast_always))

+	    && can_receive_unicast_unconfigured (client->interface))

 		client -> packet.flags = 0;

 	else

 		client -> packet.flags = htons (BOOTP_BROADCAST);

diff -up dhcp-4.2.4-P2/common/conflex.c.options dhcp-4.2.4-P2/common/conflex.c

--- dhcp-4.2.4-P2/common/conflex.c.options	2012-08-28 04:13:03.000000000 +0200

+++ dhcp-4.2.4-P2/common/conflex.c	2012-09-26 10:34:27.142049876 +0200

@@ -808,6 +808,8 @@ intern(char *atom, enum dhcp_token dfv)

 			return BALANCE;

 		if (!strcasecmp (atom + 1, "ound"))

 			return BOUND;

+		if (!strcasecmp (atom + 1, "ootp-broadcast-always"))

+			return BOOTP_BROADCAST_ALWAYS;

 		break;

 	      case 'c':

 		if (!strcasecmp(atom + 1, "ase"))

diff -up dhcp-4.2.4-P2/includes/dhcpd.h.options dhcp-4.2.4-P2/includes/dhcpd.h

--- dhcp-4.2.4-P2/includes/dhcpd.h.options	2012-08-28 04:13:22.000000000 +0200

+++ dhcp-4.2.4-P2/includes/dhcpd.h	2012-09-26 10:34:27.143049865 +0200

@@ -1153,6 +1153,9 @@ struct client_config {

 	int do_forward_update;		/* If nonzero, and if we have the

 					   information we need, update the

 					   A record for the address we get. */

+

+	int bootp_broadcast_always;	/* If nonzero, always set the BOOTP_BROADCAST

+					   flag in requests */

 };

 /* Per-interface state used in the dhcp client... */

diff -up dhcp-4.2.4-P2/includes/dhctoken.h.options dhcp-4.2.4-P2/includes/dhctoken.h

--- dhcp-4.2.4-P2/includes/dhctoken.h.options	2012-08-28 04:13:03.000000000 +0200

+++ dhcp-4.2.4-P2/includes/dhctoken.h	2012-09-26 10:34:27.144049854 +0200

@@ -364,7 +364,8 @@ enum dhcp_token {

 	GETHOSTBYNAME = 665,

 	PRIMARY6 = 666,

 	SECONDARY6 = 667,

-	TOKEN_INFINIBAND = 668

+	TOKEN_INFINIBAND = 668,

+	BOOTP_BROADCAST_ALWAYS = 669

 };

 #define is_identifier(x)	((x) >= FIRST_TOKEN &&	\