diff --git a/src/drivers/net/mlx_ipoib/cmdif_mt25218.c b/src/drivers/net/mlx_ipoib/cmdif_mt25218.c
index fb95edbe..704fb1fc 100644
--- a/src/drivers/net/mlx_ipoib/cmdif_mt25218.c
+++ b/src/drivers/net/mlx_ipoib/cmdif_mt25218.c
@@ -22,14 +22,6 @@
 #include "cmdif_priv.h"
 #include "mt25218.h"
 
-/*
- *  cmd_sys_dis
- */
-static int cmd_sys_dis(void)
-{
-	return 0;
-}
-
 /*
  *  cmd_write_mgm
  */
@@ -325,6 +317,24 @@ static int cmd_map_icm_aux(struct map_icm_st *map_icm_aux_p)
 	return rc;
 }
 
+
+/*
+ *  cmd_unmap_icm_aux
+ */
+static int cmd_unmap_icm_aux(void)
+{
+	int rc;
+	command_fields_t cmd_desc;
+
+	memset(&cmd_desc, 0, sizeof cmd_desc);
+
+	cmd_desc.opcode = MEMFREE_CMD_UNMAP_ICM_AUX;
+
+	rc = cmd_invoke(&cmd_desc);
+
+	return rc;
+}
+
 /*
  *  cmd_map_icm
  */
@@ -371,6 +381,31 @@ static int cmd_map_icm(struct map_icm_st *map_icm_p)
 	return rc;
 }
 
+
+
+/*
+ *  cmd_unmap_icm
+ */
+static int cmd_unmap_icm(struct map_icm_st *map_icm_p)
+{
+	int rc;
+	command_fields_t cmd_desc;
+	__u32 iprm[2];
+
+	memset(&cmd_desc, 0, sizeof cmd_desc);
+
+	cmd_desc.opcode = MEMFREE_CMD_UNMAP_ICM;
+	iprm[0] = map_icm_p->vpm_arr[0].va_h;
+	iprm[1] = map_icm_p->vpm_arr[0].va_l;
+	cmd_desc.in_param = iprm;
+	cmd_desc.in_trans = TRANS_IMMEDIATE;
+	cmd_desc.input_modifier = 1 << map_icm_p->vpm_arr[0].log2_size;
+
+	rc = cmd_invoke(&cmd_desc);
+
+	return rc;
+}
+
 /*
  *  cmd_query_dev_lim
  */
diff --git a/src/drivers/net/mlx_ipoib/doc/README.boot_over_ib b/src/drivers/net/mlx_ipoib/doc/README.boot_over_ib
index 07738628..062abd3f 100644
--- a/src/drivers/net/mlx_ipoib/doc/README.boot_over_ib
+++ b/src/drivers/net/mlx_ipoib/doc/README.boot_over_ib
@@ -92,13 +92,11 @@ files with .mlx extension also available from Mellanox's web site.
 
 6. Preparing the DHCP Server
 -----------------------------
-DHCP messages over IP Over IB are transmitted as broadcasts. In order to 
-distinguish between messages belonging to a certain DHCP session, the messages 
-must carry the client identifier option (see ietf documentation	referred to 
-above). As of November 2005, ISC DHCP servers do not support this feature. 
-They are expected to support this at the end of 2005. In order to work this 
-out, the appropriate patch must be applied (see patches directory). It has 
-been tested on version isc-dhcpd-V3.0.4b2.
+The DHCP server may need to be modified in order to work on IPOIB. Some
+distributuions alreay support this (Some SUSE distributuions) while others
+do not. If the pre-installed server does not support IPOIB, the user can download
+the sources from ISC http://www.isc.org/ and apply the appropriate patch in
+the patches directory.
 
 The DHCP server must run on a machine which supports IP Over IB. The Mellanox 
 IBGD package (gen1 or gen2) can be used to provide this.
@@ -171,6 +169,14 @@ PXE_IB_PORT.
 
 14. Installing a package from Mellanox
 --------------------------------------
+The package comes as a compressed file with extension .bz2 or .gz. Follow 
+these steps:
+1. Create a directory
+2. cd to this directory
+3. tar jxf <package file name>  for .bz2 files or
+   tar zxf <package file name>  for .gz files
+
+The binaries can be found under src/bin
 When using a package obtained from Mellanox Technologies' web site, the
 directory src/bin will contain the driver binary files. The files have a .bin
 extension and are equivalent to the same files with .zrom extension.
diff --git a/src/drivers/net/mlx_ipoib/ib_driver.c b/src/drivers/net/mlx_ipoib/ib_driver.c
index a46db7fc..a3015ba2 100644
--- a/src/drivers/net/mlx_ipoib/ib_driver.c
+++ b/src/drivers/net/mlx_ipoib/ib_driver.c
@@ -248,12 +248,10 @@ static int ib_driver_close(int fw_fatal)
 		ret = 1;
 	}
 
-	if (!fw_fatal) {
-		rc = cmd_sys_dis();
-		if (rc) {
-			eprintf("");
-			ret = 1;
-		}
+	rc = unset_hca();
+	if (rc) {
+		eprintf("");
+		ret = 1;
 	}
 
 	return ret;
diff --git a/src/drivers/net/mlx_ipoib/ib_mt23108.c b/src/drivers/net/mlx_ipoib/ib_mt23108.c
index ca3abb10..e09eabfe 100644
--- a/src/drivers/net/mlx_ipoib/ib_mt23108.c
+++ b/src/drivers/net/mlx_ipoib/ib_mt23108.c
@@ -21,7 +21,7 @@
 
 #include "mt23108.h"
 #include "ib_driver.h"
-#include <gpxe/pci.h>
+#include "pci.h"
 
 struct device_buffers_st {
 	union recv_wqe_u mads_qp_rcv_queue[NUM_MADS_RCV_WQES]
@@ -799,6 +799,20 @@ static int setup_hca(__u8 port, void **eq_p)
 	return ret;
 }
 
+
+static int unset_hca(void)
+{
+	int rc = 0;
+
+	if (!fw_fatal) {
+		rc = cmd_sys_dis();
+		if (rc)
+			eprintf("");
+	}
+
+	return rc;
+}
+
 static void *get_inprm_buf(void)
 {
 	return dev_buffers_p->inprm_buf;
diff --git a/src/drivers/net/mlx_ipoib/ib_mt25218.c b/src/drivers/net/mlx_ipoib/ib_mt25218.c
index f16577f1..8b6b9945 100644
--- a/src/drivers/net/mlx_ipoib/ib_mt25218.c
+++ b/src/drivers/net/mlx_ipoib/ib_mt25218.c
@@ -21,7 +21,7 @@
 
 #include "mt25218.h"
 #include "ib_driver.h"
-#include <gpxe/pci.h>
+#include "pci.h"
 
 #define MOD_INC(counter, max_count) (counter) = ((counter)+1) & ((max_count) - 1)
 
@@ -89,6 +89,10 @@ static struct dev_pci_struct memfree_pci_dev;
 static struct device_buffers_st *dev_buffers_p;
 static struct device_ib_data_st dev_ib_data;
 
+
+
+struct map_icm_st icm_map_obj;
+
 static int gw_write_cr(__u32 addr, __u32 data)
 {
 	writel(htonl(data), memfree_pci_dev.cr_space + addr);
@@ -850,6 +854,8 @@ static int setup_hca(__u8 port, void **eq_p)
 		eprintf("");
 		goto undo_map_fa;
 	}
+	icm_map_obj = map_obj;
+
 	phys_mem.offset += (1 << (map_obj.vpm_arr[0].log2_size + 12));
 
 	init_hca.log_max_uars = log_max_uars;
@@ -978,6 +984,30 @@ static int setup_hca(__u8 port, void **eq_p)
 	return ret;
 }
 
+
+static int unset_hca(void)
+{
+	int rc, ret = 0;
+
+	rc = cmd_unmap_icm(&icm_map_obj);
+	if (rc)
+		eprintf("");
+	ret |= rc;
+
+
+	rc = cmd_unmap_icm_aux();
+	if (rc)
+		eprintf("");
+	ret |= rc;
+
+	rc = cmd_unmap_fa();
+	if (rc)
+		eprintf("");
+	ret |= rc;
+
+	return ret;
+}
+
 static void *get_inprm_buf(void)
 {
 	return dev_buffers_p->inprm_buf;
diff --git a/src/drivers/net/mlx_ipoib/ipoib.c b/src/drivers/net/mlx_ipoib/ipoib.c
index 85eaac7a..33472de3 100644
--- a/src/drivers/net/mlx_ipoib/ipoib.c
+++ b/src/drivers/net/mlx_ipoib/ipoib.c
@@ -357,52 +357,12 @@ static void modify_dhcp_resp(void *buf, __u16 size)
 	modify_udp_csum(buf, size);
 }
 
-static void get_my_client_id(__u8 * my_client_id)
-{
-
-	my_client_id[0] = 0;
-	qpn2buf(ipoib_data.ipoib_qpn, my_client_id + 1);
-	memcpy(my_client_id + 4, ipoib_data.port_gid_raw, 16);
-}
-
-static const __u8 *get_client_id(const void *buf, int len)
-{
-	const __u8 *ptr;
-	int delta;
-
-	if (len < 268)
-		return NULL;
-
-	/* pointer to just after magic cookie */
-	ptr = (const __u8 *)buf + 268;
-
-	/* find last client identifier option */
-	do {
-		if (ptr[0] == 255) {
-			/* found end of options list */
-			return NULL;
-		}
-
-		if (ptr[0] == 0x3d) {
-			/* client identifer option */
-			return ptr + 3;
-		}
-
-		delta = ptr[1] + 2;
-		ptr += delta;
-		len -= delta;
-	} while (len > 0);
-
-	return NULL;
-}
-
 static int handle_ipv4_packet(void *buf, void **out_buf_p,
 			      unsigned int *new_size_p, int *is_bcast_p)
 {
 	void *new_buf;
 	__u16 new_size;
 	__u8 msg_type;
-	__u8 my_client_id[20];
 
 	new_buf = (void *)(((__u8 *) buf) + 4);
 	new_size = (*new_size_p) - 4;
@@ -411,7 +371,6 @@ static int handle_ipv4_packet(void *buf, void **out_buf_p,
 
 	if (get_ip_protocl(new_buf) == IP_PROT_UDP) {
 		__u16 udp_dst_port;
-		const __u8 *client_id;
 
 		udp_dst_port = get_udp_dst_port(new_buf);
 
@@ -420,22 +379,6 @@ static int handle_ipv4_packet(void *buf, void **out_buf_p,
 			*out_buf_p = 0;
 			return 0;
 		}
-
-		if (udp_dst_port == 68) {
-			get_my_client_id(my_client_id);
-
-			/* packet client id */
-			client_id = get_client_id(new_buf, new_size);
-			if (!client_id) {
-				*out_buf_p = 0;
-				return 0;
-			}
-
-			if (memcmp(client_id, my_client_id, 20)) {
-				*out_buf_p = 0;
-				return 0;
-			}
-		}
 	}
 
 	msg_type = get_dhcp_msg_type(new_buf);
@@ -515,8 +458,9 @@ static int ipoib_handle_rcv(void *buf, void **out_buf_p,
 		rc = handle_ipv4_packet(buf, out_buf_p, new_size_p, is_bcast_p);
 		return rc;
 	}
-	eprintf("prot=0x%x", prot_type);
-	return -1;
+	tprintf("prot=0x%x", prot_type);
+    *out_buf_p = NULL;
+	return 0;
 }
 
 static int is_null_mac(const __u8 * mac)
diff --git a/src/drivers/net/mlx_ipoib/mt23108.c b/src/drivers/net/mlx_ipoib/mt23108.c
index 492bc901..157995d7 100644
--- a/src/drivers/net/mlx_ipoib/mt23108.c
+++ b/src/drivers/net/mlx_ipoib/mt23108.c
@@ -15,9 +15,9 @@ Skeleton NIC driver for Etherboot
 /* to get the interface to the body of the program */
 #include "nic.h"
 /* to get the PCI support functions, if this is a PCI NIC */
-#include <gpxe/pci.h>
+#include "pci.h"
 /* to get the ISA support functions, if this is an ISA NIC */
-#include <gpxe/isa.h>
+#include "isa.h"
 
 #include "mt_version.c"
 #include "mt23108_imp.c"
@@ -235,7 +235,7 @@ static struct pci_id tavor_nics[] = {
 	PCI_ROM(0x15b3, 0x6278, "MT25208", "MT25208 HCA driver"),
 };
 
-struct pci_driver tavor_driver __pci_driver = {
+static struct pci_driver tavor_driver __pci_driver = {
 	.type = NIC_DRIVER,
 	.name = "MT23108/MT25208",
 	.probe = tavor_probe,
diff --git a/src/drivers/net/mlx_ipoib/mt25218.c b/src/drivers/net/mlx_ipoib/mt25218.c
index a603cdeb..7866bf60 100644
--- a/src/drivers/net/mlx_ipoib/mt25218.c
+++ b/src/drivers/net/mlx_ipoib/mt25218.c
@@ -15,9 +15,9 @@ Skeleton NIC driver for Etherboot
 /* to get the interface to the body of the program */
 #include "nic.h"
 /* to get the PCI support functions, if this is a PCI NIC */
-#include <gpxe/pci.h>
+#include "pci.h"
 /* to get the ISA support functions, if this is an ISA NIC */
-#include <gpxe/isa.h>
+#include "isa.h"
 
 #include "mt_version.c"
 #include "mt25218_imp.c"
@@ -235,7 +235,7 @@ static struct pci_id mt25218_nics[] = {
 	PCI_ROM(0x15b3, 0x6274, "MT25204", "MT25204 HCA driver"),
 };
 
-struct pci_driver mt25218_driver __pci_driver = {
+static struct pci_driver mt25218_driver __pci_driver = {
 	.type = NIC_DRIVER,
 	.name = "MT25218",
 	.probe = mt25218_probe,
diff --git a/src/drivers/net/mlx_ipoib/mt25218.h b/src/drivers/net/mlx_ipoib/mt25218.h
index 15a3feaf..1e7c8d8b 100644
--- a/src/drivers/net/mlx_ipoib/mt25218.h
+++ b/src/drivers/net/mlx_ipoib/mt25218.h
@@ -26,7 +26,9 @@
 #define MEMFREE_CMD_RUN_FW			0xff6
 #define MEMFREE_CMD_SET_ICM_SIZE	0xffd
 #define MEMFREE_CMD_MAP_ICM_AUX		0xffc
+#define MEMFREE_CMD_UNMAP_ICM_AUX		0xffb
 #define MEMFREE_CMD_MAP_ICM			0xffa
+#define MEMFREE_CMD_UNMAP_ICM			0xff9
 #define MEMFREE_CMD_QUERY_DEV_LIM   0x003
 
 /*
diff --git a/src/drivers/net/mlx_ipoib/mt_version.c b/src/drivers/net/mlx_ipoib/mt_version.c
index 2dbd67a6..bae860c3 100644
--- a/src/drivers/net/mlx_ipoib/mt_version.c
+++ b/src/drivers/net/mlx_ipoib/mt_version.c
@@ -20,4 +20,4 @@
 */
 
 /* definition of the build version goes here */
-const char *build_revision= "113";
+const char *build_revision= "191";
diff --git a/src/drivers/net/mlx_ipoib/patches/dhcpd.patch b/src/drivers/net/mlx_ipoib/patches/dhcpd.patch
index e2d0a202..3f6269bf 100644
--- a/src/drivers/net/mlx_ipoib/patches/dhcpd.patch
+++ b/src/drivers/net/mlx_ipoib/patches/dhcpd.patch
@@ -1,17 +1,7 @@
-diff -ru ../../orig/dhcp-3.0.4b2/common/options.c ./common/options.c
---- ../../orig/dhcp-3.0.4b2/common/options.c	2005-11-02 01:19:03.000000000 +0200
-+++ ./common/options.c	2005-12-06 14:38:17.000000000 +0200
-@@ -537,6 +537,7 @@
- 	priority_list [priority_len++] = DHO_DHCP_LEASE_TIME;
- 	priority_list [priority_len++] = DHO_DHCP_MESSAGE;
- 	priority_list [priority_len++] = DHO_DHCP_REQUESTED_ADDRESS;
-+	priority_list [priority_len++] = DHO_DHCP_CLIENT_IDENTIFIER;
- 	priority_list [priority_len++] = DHO_FQDN;
- 
- 	if (prl && prl -> len > 0) {
-diff -ru ../../orig/dhcp-3.0.4b2/includes/site.h ./includes/site.h
---- ../../orig/dhcp-3.0.4b2/includes/site.h	2002-03-12 20:33:39.000000000 +0200
-+++ ./includes/site.h	2005-12-06 14:36:55.000000000 +0200
+Index: dhcp-3.0.4b3/includes/site.h
+===================================================================
+--- dhcp-3.0.4b3.orig/includes/site.h	2002-03-12 20:33:39.000000000 +0200
++++ dhcp-3.0.4b3/includes/site.h	2006-03-15 12:50:00.000000000 +0200
 @@ -135,7 +135,7 @@
     the aforementioned problems do not matter to you, or if no other
     API is supported for your system, you may want to go with it. */