diff --git a/Platform/user/configm/config-server/ipconfig/ipconfig.c b/Platform/user/configm/config-server/ipconfig/ipconfig.c
index 98c2759f0..2eea25030 100644
--- a/Platform/user/configm/config-server/ipconfig/ipconfig.c
+++ b/Platform/user/configm/config-server/ipconfig/ipconfig.c
@@ -49,7 +49,7 @@ void ip_save_file(ip_config_t *ip_conf, uint config_type)
         sprintf(addr_buff, "address %s\n", inet_ntoa(ip_conf->prefix));
         masklen2ip(ip_conf->prefixlen, &netmask);
         sprintf(mask_buff, "netmask %s\n", inet_ntoa(netmask));
-        printf("%s,%s\r\n",addr_buff, mask_buff);
+        rpc_log_info("%s %s",addr_buff, mask_buff);
         
         set_if_config(ip_conf->ifname, addr_name, addr_buff);
         set_if_config(ip_conf->ifname, mask_name, mask_buff);
@@ -233,11 +233,12 @@ ret_code ip_config_set_chk(uint source,uint config_type,
         ret = RET_INPUTERR;
     }
     
-    if (ipv4_martian(&ip_conf->prefix)) 
+    if (config_type != CM_CONFIG_DEL && ipv4_martian(&ip_conf->prefix)) 
     {
         ret =  RET_IPINVALID;
     }
 
+
     ASSERT_RET(ret);
 
     if(ip_conf->prefixlen == 0 || ip_conf->prefixlen > IPV4_MAX_PREFIXLEN)
diff --git a/Platform/user/configm/config-server/ipconfig/parsefile.c b/Platform/user/configm/config-server/ipconfig/parsefile.c
index c5bdd3b3f..e1ac1d3b4 100644
--- a/Platform/user/configm/config-server/ipconfig/parsefile.c
+++ b/Platform/user/configm/config-server/ipconfig/parsefile.c
@@ -244,7 +244,7 @@ void set_if_config(char *if_name, char *conf_name, char *conf_buff)
     f = fopen(conf_path,"r+");
     if(f == NULL)
     {
-        printf("OPEN CONFIG FALID\n");
+        rpc_log_error("OPEN CONFIG FALID\n");
         return;
     }
 
@@ -273,7 +273,7 @@ void set_if_config(char *if_name, char *conf_name, char *conf_buff)
             continue;
         }
         
-        if(leave_line == NULL)                   
+        if(leave_line == NULL)
         {            
             leave_line = strstr(config_linebuf, iface_str);
             
@@ -334,7 +334,7 @@ void set_if_config(char *if_name, char *conf_name, char *conf_buff)
         strcat(sum_buf, conf_buff);
     }
     
-    printf("---sum_buf---->%s<----------/n",sum_buf);
+    rpc_log_dbg("---sum_buf---->%s<----------\n",sum_buf);
     remove(conf_path);
     fclose(f);
     
@@ -342,7 +342,7 @@ void set_if_config(char *if_name, char *conf_name, char *conf_buff)
     fp = fopen(conf_path,"w+");
     if(fp == NULL)
     {
-        printf("OPEN CONFIG FALID/n");
+        rpc_log_error("OPEN CONFIG FALID\n");
         return;
     }
     fseek(fp,0,SEEK_SET);
diff --git a/Platform/user/configm/config-test/configtest.c b/Platform/user/configm/config-test/configtest.c
index 01a364713..ab323f60f 100644
--- a/Platform/user/configm/config-test/configtest.c
+++ b/Platform/user/configm/config-test/configtest.c
@@ -98,7 +98,7 @@ int parse_config_type(char *str)
 }
 
 
-void parse_input_str(int argc, char **argv, int *config_type, ip_config_t *ip_conf)
+ret_code parse_input_str(int argc, char **argv, int *config_type, ip_config_t *ip_conf)
 {
     int intput_cnt = argc;
     int idx = 1;
@@ -113,13 +113,13 @@ void parse_input_str(int argc, char **argv, int *config_type, ip_config_t *ip_co
     if(*config_type == CM_CONFIG_GET_ALL 
         || *config_type == 0)
     {
-        return;
+        return RET_OK;
     }
     
      if(intput_cnt < 2)
     {
         printf("input error:<type> <if>\n");
-        return;
+        return RET_INPUTERR;
     }
         
     idx++;
@@ -129,13 +129,13 @@ void parse_input_str(int argc, char **argv, int *config_type, ip_config_t *ip_co
     if(*config_type == CM_CONFIG_GET)
     {
         ip_conf->family = AF_INET;
-        return;
+        return RET_OK;
     }
 
     if(argc < 4)
     {
         printf("input error:<type> <if> <ip> <mask>\n");
-        return;
+        return RET_INPUTERR;
     }
         
     printf("if %s\n",ip_conf->ifname);
@@ -165,7 +165,10 @@ int main(int argc, char **argv)
     char* output = NULL;
     int output_len;
 
-    parse_input_str(argc, argv, &config_type, &ip_conf);
+    if(parse_input_str(argc, argv, &config_type, &ip_conf != RET_OK)
+    {
+        return EXIT_FAILURE;
+    }
     
     printf("=============================\n");