diff --git a/Platform/user/configm/config-server/include/netconfig.h b/Platform/user/configm/config-server/include/netconfig.h
index f4a9d5348..82c4b6170 100644
--- a/Platform/user/configm/config-server/include/netconfig.h
+++ b/Platform/user/configm/config-server/include/netconfig.h
@@ -27,55 +27,6 @@ struct _net_ifnum {
 };
 typedef struct _net_ifnum net_ifnum_t;
 
-
-#if 0
-struct _ethtool_value {
-	uint	cmd;
-	uint	data;
-};
-typedef struct _ethtool_value ethtool_value_t;
-
-
-
-
-struct ethtool_cmd {
-	uint	cmd;
-	uint	supported;
-	uint	advertising;
-	uint16	speed;
-	uchar	duplex;
-	uchar	port;
-	uchar	phy_address;
-	uchar	transceiver;
-	uchar	autoneg;
-	uchar	mdio_support;
-	uint	maxtxpkt;
-	uint	maxrxpkt;
-	uint16	speed_hi;
-	uchar	eth_tp_mdix;
-	uchar	eth_tp_mdix_ctrl;
-	uint	lp_advertising;
-	uint	reserved[2];
-};
-
-struct ethtool_link_settings {
-	uint	cmd;
-	uint	speed;
-	uchar	duplex;
-	uchar	port;
-	uchar	phy_address;
-	uchar	autoneg;
-	uchar	mdio_support;
-	uchar	eth_tp_mdix;
-	uchar	eth_tp_mdix_ctrl;
-	uchar	link_mode_masks_nwords;
-	uchar	transceiver;
-	uchar	reserved1[3];
-	uint	reserved[7];
-	uint	link_mode_masks[0];
-};
-#endif
-
 struct ethtool_link_data{
     struct ethtool_link_settings req;
     uint link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
@@ -142,7 +93,20 @@ struct interface {
     int keepalive;		/* keepalive value for SLIP */
     int outfill;		/* outfill value for SLIP */
 };
+#ifndef _LINUX_IN6_H
+/*
+ *    This is in linux/include/net/ipv6.h.
+ */
 
+struct in6_ifreq {
+    struct in6_addr ifr6_addr;
+    uint ifr6_prefixlen;
+    unsigned int ifr6_ifindex;
+};
+
+#endif
+ret_code ip_config_type_dhcp(char *ifname);
+ret_code ip_config_type_dhcpv6(char *ifname);
 ret_code if_get_ipenable(if_info_t *if_info);
 ret_code if_get_v4proto(if_info_t *if_info);
 ret_code if_get_v6proto(if_info_t *if_info);
diff --git a/Platform/user/configm/config-server/netconfig/ifconfig.c b/Platform/user/configm/config-server/netconfig/ifconfig.c
index baa87ce24..cf06d8995 100644
--- a/Platform/user/configm/config-server/netconfig/ifconfig.c
+++ b/Platform/user/configm/config-server/netconfig/ifconfig.c
@@ -16,18 +16,6 @@
 #include "netconfig.h"
 #include "parsefile.h"
 
-#ifndef _LINUX_IN6_H
-/*
- *    This is in linux/include/net/ipv6.h.
- */
-
-struct in6_ifreq {
-    struct in6_addr ifr6_addr;
-    uint ifr6_prefixlen;
-    unsigned int ifr6_ifindex;
-};
-
-#endif
 net_ifnum_t g_if_num = {.wan_num = 2, .lan_num = 4};
 
 /* Display an Ethernet address in readable format. */
@@ -39,12 +27,6 @@ static void print_ether(char *buff, unsigned char *ptr)
 	     (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
 	);
 }
-#if 0
-static uint ethtool_cmd_speed(const struct ethtool_cmd *ep)
-{
-	return (ep->speed_hi << 16) | ep->speed;
-}
-#endif
 
 /* call ioctl system call */
 ret_code if_ioctl(int af, unsigned long request, caddr_t ifreq)
@@ -389,7 +371,7 @@ ret_code if_set_prefix(ip_config_t *ip_conf)
     return RET_OK;
 }
 
-ret_code if_del_oldin6(char *name, struct in6_ifreq *ifr6)
+ret_code if_del_in6(char *name, struct in6_ifreq *ifr6)
 {
     v6addr_t ipv6_arr[IPV6_ADDR_NUM] = {0};
     struct in6_ifreq ifdel = {0};
@@ -409,7 +391,7 @@ ret_code if_del_oldin6(char *name, struct in6_ifreq *ifr6)
         }
 
         memset(&ifdel, 0, sizeof(struct in6_ifreq));
-        ifdel.ifr6_ifindex   = ifr6->ifr6_ifindex;        
+        ifdel.ifr6_ifindex = ifr6->ifr6_ifindex; 
         ifdel.ifr6_prefixlen = ipv6_arr[i].prefixlen;
         
         memcpy((char *) &ifdel.ifr6_addr, &(ipv6_arr[i].addr), sizeof(struct in6_addr));
@@ -440,7 +422,7 @@ ret_code if_set_prefix6(uint config_type, ip_config_t *ip_conf)
 
     if(config_type == CM_CONFIG_SET)
     {
-        ret = if_del_oldin6(ip_conf->ifname, &ifr6); 
+        ret = if_del_in6(ip_conf->ifname, &ifr6); 
         if(ret == RET_EXIST) 
         {
             return RET_OK;
diff --git a/Platform/user/configm/config-server/netconfig/ipconfig/ipconfig.c b/Platform/user/configm/config-server/netconfig/ipconfig/ipconfig.c
index d4d98fd85..61d0c08f6 100644
--- a/Platform/user/configm/config-server/netconfig/ipconfig/ipconfig.c
+++ b/Platform/user/configm/config-server/netconfig/ipconfig/ipconfig.c
@@ -2,6 +2,7 @@
 #include "rpc.h"
 #include "parsefile.h"
 #include "netconfig.h"
+#include "dhcp_lib.h"
 
 uchar ip_masklen(struct in_addr netmask)
 {
@@ -44,6 +45,28 @@ static char *ip_inet6_print(struct in6_addr *ptr)
     return name;
 }
 
+void ip_save_dhcp(char *ifname)
+{
+    char static_name[IF_BUFF_LEN] = {0};
+    char static_buff[IF_BUFF_LEN] = {0};
+    
+    sprintf(static_name, "iface %s inet", ifname);
+    sprintf(static_buff, "iface %s inet dhcp\n", ifname);
+
+    if_conf_file_set(ifname, static_name, static_buff);
+}
+
+void ip_save_dhcpv6(char *ifname)
+{
+    char static_name[IF_BUFF_LEN] = {0};
+    char static_buff[IF_BUFF_LEN] = {0};
+    
+    sprintf(static_name, "iface %s inet6", ifname);
+    sprintf(static_buff, "iface %s inet6 dhcp\n", ifname);
+
+    if_conf_file_set(ifname, static_name, static_buff);
+}
+
 
 void ip_save_file(ip_config_t *ip_conf, uint config_type)
 {
@@ -252,6 +275,41 @@ cJSON * ip_config_format_json(if_info_t *config_buff, int v6_cnt)
     return json_obj;
 }
 
+ret_code ip_del_allin6(char *name)
+{
+    v6addr_t ipv6_arr[IPV6_ADDR_NUM] = {0};
+    struct in6_ifreq ifdel = {0};
+    ip_config_t ip_conf = {0};
+    int addr_cnt = 0;
+    int ifindex = 0;
+    int i;
+
+    ifindex = if_nametoindex(name);
+    ASSERT_COND(ifindex == 0);
+    
+    addr_cnt = if_read_in6_file(name, ipv6_arr, IPV6_ADDR_NUM);
+
+    for(i = 0; i < addr_cnt; i++)
+    {
+        memset(&ifdel, 0, sizeof(struct in6_ifreq));
+        ifdel.ifr6_ifindex = ifindex;
+        ifdel.ifr6_prefixlen = ipv6_arr[i].prefixlen;        
+        memcpy((char *) &ifdel.ifr6_addr, &(ipv6_arr[i].addr), sizeof(struct in6_addr));
+        
+        if_ioctl(AF_INET6, SIOCDIFADDR, (caddr_t)&ifdel);
+
+        memset(&ip_conf, 0, sizeof(ip_config_t));
+        strncpy(&(ip_conf.ifname), name, INTERFACE_NAMSIZ - 1);
+        memcpy(&(ip_conf.ipv6.addr), &(ipv6_arr[i].addr), sizeof(struct in6_addr));
+        ip_conf.ipv6.prefixlen = ipv6_arr[i].prefixlen;
+
+        ip6_save_file(&ip_conf, CM_CONFIG_DEL);
+    }
+    
+    return RET_OK;
+}
+
+
 ret_code if_get_info(if_info_t *if_info, int *v6_cnt)
 {
     ret_code ret = RET_OK;
@@ -602,3 +660,52 @@ ret_code ip_config_get_all(uint source, pointer output, int *output_len)
 
     return RET_OK;
 }
+
+ret_code ip_config_type_dhcp(char *ifname)
+{
+    uint conf_type = CM_CONFIG_DEL;
+    ip_config_t ip_conf = {0};
+    if_info_t if_info = {0};
+    ret_code ret = RET_OK;
+
+    strncpy(if_info.ifname, ifname, INTERFACE_NAMSIZ - 1);
+    if_get_v4proto(&if_info);
+    if(strcmp(if_info.v4protocol, "dhcp") == 0)
+    {
+        return ret;
+    }
+
+    strncpy(ip_conf.ifname, ifname, INTERFACE_NAMSIZ - 1);
+    ip_conf.family = AF_INET;
+    ip_conf.ipv4.addr.s_addr = 0;
+        
+    ret = if_set_prefix(&ip_conf);
+
+    ip_save_file(&ip_conf, conf_type);
+    ip_save_dhcp(ifname);
+    
+    ASSERT_RET(ret);
+    
+    return ret;
+}
+
+ret_code ip_config_type_dhcpv6(char *ifname)
+{
+    struct in6_ifreq ifr6 = {0};
+    if_info_t if_info = {0};
+    ret_code ret = RET_OK;
+
+    strncpy(if_info.ifname, ifname, INTERFACE_NAMSIZ - 1);
+    if_get_v6proto(&if_info);
+    if(strcmp(if_info.v6protocol, "dhcp") == 0)
+    {
+        return ret;
+    }
+
+    ret = ip_del_allin6(ifname);
+    ip_save_dhcpv6(ifname);
+    
+    ASSERT_RET(ret);
+    return ret;
+}
+