diff --git a/src/common_define.h b/src/common_define.h
index fe92638..9c63882 100644
--- a/src/common_define.h
+++ b/src/common_define.h
@@ -48,6 +48,13 @@ typedef DWORD (WINAPI *ThreadEntranceFunc)(LPVOID lpThreadParameter);
 //#include <sys/syscall.h>
 #endif
 
+/* Internet address (兼容IPv6长度).  */
+typedef unsigned long int in_addr_64_t;
+struct in_addr_64
+  {
+    in_addr_64_t s_addr;
+  };
+
 #define FILE_SEPERATOR	"/"
 typedef int SOCKET;
 #define closesocket     close
@@ -115,7 +122,8 @@ extern int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind);
 #define FC_IOV_BATCH_SIZE  IOV_MAX
 #endif
 
-#define IP_ADDRESS_SIZE	16
+// 由于要支持IPv6，所以将IP_ADDRESS_SIZE的值由16修改为46
+#define IP_ADDRESS_SIZE	INET6_ADDRSTRLEN //46
 #define INFINITE_FILE_SIZE (256 * 1024LL * 1024 * 1024 * 1024 * 1024LL)
 
 #define FILE_RESOURCE_TAG_STR  "file://"
diff --git a/src/connection_pool.c b/src/connection_pool.c
index 6d05941..4088ad9 100644
--- a/src/connection_pool.c
+++ b/src/connection_pool.c
@@ -487,7 +487,7 @@ int conn_pool_parse_server_info(const char *pServerStr,
     memcpy(server_info, pServerStr, len);
     *(server_info + len) = '\0';
 
-    count = splitEx(server_info, ':', parts, 2);
+    count = parseAddress(server_info,parts);
     if (count == 1) {
         pServerInfo->port = default_port;
     }
@@ -501,7 +501,7 @@ int conn_pool_parse_server_info(const char *pServerStr,
             return EINVAL;
         }
     }
-
+    
     if (getIpaddrByName(parts[0], pServerInfo->ip_addr,
         sizeof(pServerInfo->ip_addr)) == INADDR_NONE)
     {
@@ -511,7 +511,7 @@ int conn_pool_parse_server_info(const char *pServerStr,
         return EINVAL;
     }
 
-    pServerInfo->socket_domain = AF_INET;
+    pServerInfo->socket_domain = AF_UNSPEC;
     pServerInfo->sock = -1;
     return 0;
 }
diff --git a/src/connection_pool.h b/src/connection_pool.h
index 923c484..b6ec8f5 100644
--- a/src/connection_pool.h
+++ b/src/connection_pool.h
@@ -46,7 +46,7 @@ typedef struct
 	uint16_t port;
     short socket_domain;  //socket domain, AF_INET, AF_INET6 or AF_UNSPEC for auto dedect
     bool validate_flag;   //for connection pool
-	char ip_addr[INET6_ADDRSTRLEN];
+	char ip_addr[IP_ADDRESS_SIZE];
     char args[0];   //for extra data
 } ConnectionInfo;
 
@@ -151,7 +151,7 @@ static inline int conn_pool_init_ex(ConnectionPool *cp, int connect_timeout,
 static inline int conn_pool_init(ConnectionPool *cp, int connect_timeout,
 	const int max_count_per_entry, const int max_idle_time)
 {
-    const int socket_domain = AF_INET;
+    const int socket_domain = AF_UNSPEC;
     const int htable_init_capacity = 0;
     const int extra_data_size = 0;
     return conn_pool_init_ex1(cp, connect_timeout, max_count_per_entry,
diff --git a/src/id_generator.c b/src/id_generator.c
index b666af8..530378b 100644
--- a/src/id_generator.c
+++ b/src/id_generator.c
@@ -84,6 +84,8 @@ int id_generator_init_extra_ex(struct idg_context *context, const char *filename
 		const char *local_ip;
 		const char *private_ip;
 		struct in_addr ip_addr;
+		struct in6_addr ip6_addr;
+		bool is_local_ip_ok = false;
 
 		private_ip = get_first_local_private_ip();
 		if (private_ip != NULL)
@@ -100,16 +102,25 @@ int id_generator_init_extra_ex(struct idg_context *context, const char *filename
 				context->fd = -1;
 				return ENOENT;
 			}
-			else if (strcmp(local_ip, LOCAL_LOOPBACK_IP) == 0)
+			else if (strcmp(local_ip, LOCAL_LOOPBACK_IPv4) == 0)
 			{
+				// 注意，当系统存在IPv6回环地址时，为了简化系统的改动，会将IPv6回环地址修改成IPv4回环地址返回
+				// 此处错误打印时，需要带上IPv6回环地址
 				logWarning("file: "__FILE__", line: %d, "
-					"can't get local ip address, set to %s",
-					__LINE__, LOCAL_LOOPBACK_IP);
+					"can't get local ip address, set to %s or %s",
+					__LINE__, LOCAL_LOOPBACK_IPv4, LOCAL_LOOPBACK_IPv6);
 			}
 		}
 
 		if (inet_pton(AF_INET, local_ip, &ip_addr) != 1)
 		{
+			is_local_ip_ok = true;
+		}else if(inet_pton(AF_INET6, local_ip, &ip6_addr) != 1)
+		{
+			is_local_ip_ok = true;
+		}
+
+		if(is_local_ip_ok){
 			logError("file: "__FILE__", line: %d, "
 				"invalid local ip address: %s",
 				__LINE__, local_ip);
diff --git a/src/local_ip_func.c b/src/local_ip_func.c
index 77813d5..6f9d1b5 100644
--- a/src/local_ip_func.c
+++ b/src/local_ip_func.c
@@ -96,7 +96,7 @@ void load_local_host_ip_addrs()
 	char *if_alias_prefixes[STORAGE_MAX_ALIAS_PREFIX_COUNT];
 	int alias_count;
 
-	insert_into_local_host_ip(LOCAL_LOOPBACK_IP);
+	insert_into_local_host_ip(LOCAL_LOOPBACK_IPv4);
 
 	memset(if_alias_prefixes, 0, sizeof(if_alias_prefixes));
 	if (*g_if_alias_prefix == '\0')
@@ -124,8 +124,8 @@ void load_local_host_ip_addrs()
 		insert_into_local_host_ip(ip_addresses[k]);
 	}
 
-	//log_local_host_ip_addrs();
-	//print_local_host_ip_addrs();
+	// log_local_host_ip_addrs();
+	// print_local_host_ip_addrs();
 }
 
 void print_local_host_ip_addrs()
@@ -161,7 +161,8 @@ const char *get_next_local_ip(const char *previous_ip)
 		IP_ADDRESS_SIZE * g_local_host_ip_count;
 	for (p=g_local_host_ip_addrs; p<pEnd; p+=IP_ADDRESS_SIZE)
 	{
-	    if (strcmp(p, LOCAL_LOOPBACK_IP) != 0)
+	    if (strcmp(p, LOCAL_LOOPBACK_IPv4) != 0 &&
+		     strcmp(p, LOCAL_LOOPBACK_IPv6) !=0 )
         {
             if (found)
             {
@@ -187,7 +188,8 @@ const char *get_first_local_ip()
     }
     else
     {
-        return LOCAL_LOOPBACK_IP;
+		// 注意，当系统存在IPv6回环地址时，为了简化系统的改动，会将IPv6回环地址修改成IPv4回环地址返回
+        return LOCAL_LOOPBACK_IPv4;
     }
 }
 
diff --git a/src/local_ip_func.h b/src/local_ip_func.h
index 155b198..8b72f0c 100644
--- a/src/local_ip_func.h
+++ b/src/local_ip_func.h
@@ -27,7 +27,8 @@
 #define FAST_IF_ALIAS_PREFIX_MAX_SIZE 32
 #define FAST_MAX_LOCAL_IP_ADDRS	  16
 
-#define LOCAL_LOOPBACK_IP  "127.0.0.1"
+#define LOCAL_LOOPBACK_IPv4  "127.0.0.1"
+#define LOCAL_LOOPBACK_IPv6  "::1"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/src/shared_func.c b/src/shared_func.c
index 45ec09b..11cea7d 100644
--- a/src/shared_func.c
+++ b/src/shared_func.c
@@ -1976,15 +1976,15 @@ int set_run_by(const char *group_name, const char *username)
 	return 0;
 }
 
-static int check_realloc_allow_ips(in_addr_t **allow_ip_addrs,
+static int check_realloc_allow_ips(in_addr_64_t **allow_ip_addrs,
 	int *alloc_count, const int target_ip_count)
 {
 	int bytes;
 	if (*alloc_count < target_ip_count)
 	{
 		*alloc_count = target_ip_count;
-		bytes = sizeof(in_addr_t) * (*alloc_count);
-		*allow_ip_addrs = (in_addr_t *)fc_realloc(*allow_ip_addrs, bytes);
+		bytes = sizeof(in_addr_64_t) * (*alloc_count);
+		*allow_ip_addrs = (in_addr_64_t *)fc_realloc(*allow_ip_addrs, bytes);
 		if (*allow_ip_addrs == NULL)
 		{
 			return ENOMEM;
@@ -1994,7 +1994,7 @@ static int check_realloc_allow_ips(in_addr_t **allow_ip_addrs,
 	return 0;
 }
 
-static int parse_cidr_ips(const char *ip_addr, in_addr_t **allow_ip_addrs,
+static int parse_cidr_ips(const char *ip_addr, in_addr_64_t **allow_ip_addrs,
 	int *alloc_count, int *allow_ip_count, const int remain_items)
 {
 	char *pSlash;
@@ -2091,14 +2091,14 @@ static int parse_cidr_ips(const char *ip_addr, in_addr_t **allow_ip_addrs,
 }
 
 static int parse_range_hosts(const char *value, char *pStart, char *pEnd,
-	char *hostname, const int nHeadLen, in_addr_t **allow_ip_addrs,
+	char *hostname, const int nHeadLen, in_addr_64_t **allow_ip_addrs,
 	int *alloc_count, int *allow_ip_count, const int remain_items)
 {
 	char *pTail;
 	char *p;
 	int result;
 	int i;
-	in_addr_t addr;
+	in_addr_64_t addr;
 
 	pTail = pEnd + 1;
 	p = pStart + 1;  //skip [
@@ -2238,7 +2238,7 @@ static int parse_range_hosts(const char *value, char *pStart, char *pEnd,
 }
 
 int load_allow_hosts(IniContext *pIniContext, \
-		in_addr_t **allow_ip_addrs, int *allow_ip_count)
+		in_addr_64_t **allow_ip_addrs, int *allow_ip_count)
 {
 	int result;
 	int count;
@@ -2276,7 +2276,7 @@ int load_allow_hosts(IniContext *pIniContext, \
 
 	alloc_count = count;
 	*allow_ip_count = 0;
-	*allow_ip_addrs = (in_addr_t *)fc_malloc(sizeof(in_addr_t) * alloc_count);
+	*allow_ip_addrs = (in_addr_64_t *)fc_malloc(sizeof(in_addr_64_t) * alloc_count);
 	if (*allow_ip_addrs == NULL)
 	{
 		return ENOMEM;
@@ -2829,6 +2829,35 @@ bool is_private_ip(const char* ip)
     return false;
 }
 
+int parseAddress(char *src, char *parts[2]){
+    char *ip = NULL;  
+    char *port = NULL;  
+  
+    // 检查输入字符串是否为IPv6地址格式  
+    if (src[0] == '[') {  
+        ip = strtok(src, "[]");  
+        parts[0] = ip;  
+        port = strtok(NULL, ":");  
+        if(port=='\0'){
+            return 1;
+        }else{
+            parts[1]=port;
+            return 2;
+        }
+    } else {  
+        ip = strtok(src, ":");  
+        parts[0] = ip;  
+        port = strtok(NULL, ":");  
+        if(port=='\0'){
+            return 1;
+        }else{
+            parts[1]=port;
+            return 2;
+        }
+    }  
+}
+
+
 int64_t get_current_time_ns()
 {
     struct timespec ts;
diff --git a/src/shared_func.h b/src/shared_func.h
index 7e1ffb3..165c36a 100644
--- a/src/shared_func.h
+++ b/src/shared_func.h
@@ -544,7 +544,7 @@ void set_log_level(char *pLogLevel);
  *  return: error no , 0 success, != 0 fail
 */
 int load_allow_hosts(IniContext *pIniContext, \
-		in_addr_t **allow_ip_addrs, int *allow_ip_count);
+		in_addr_64_t **allow_ip_addrs, int *allow_ip_count);
 
 
 /** get time item from config context
@@ -754,7 +754,7 @@ int fd_set_cloexec(int fd);
 */
 int set_run_by(const char *group_name, const char *username);
 
-/** compare ip address, type is (in_addr_t *)
+/** compare ip address, type is (in_addr_64_t *)
  *  parameters:
  *  	p1: the first ip address
  *  	p2: the second ip address
@@ -807,6 +807,16 @@ double get_line_distance_km(const double lat1, const double lon1,
  */
 bool is_private_ip(const char* ip);
 
+
+/** 从字符串中解析IP地址和端口号
+ *  parameters:
+ *  	src: the source string, will be modified by this function
+ *  	parts: store split strings
+ *  return: string array / column count
+*/
+int parseAddress(char *src, char *parts[2]);
+
+
 /** get current time in ns
  *  return: current time
  */
diff --git a/src/sockopt.c b/src/sockopt.c
index 291ee2c..12cc829 100644
--- a/src/sockopt.c
+++ b/src/sockopt.c
@@ -1068,7 +1068,7 @@ const char *fc_inet_ntop(const struct sockaddr *addr,
 {
     void *sin_addr;
     const char *output;
-
+	
     if (addr->sa_family == AF_INET) {
         sin_addr = &((struct sockaddr_in *)addr)->sin_addr;
     } else if (addr->sa_family == AF_INET6) {
@@ -1092,7 +1092,7 @@ const char *fc_inet_ntop(const struct sockaddr *addr,
     return output;
 }
 
-in_addr_t getIpaddr(getnamefunc getname, int sock, \
+in_addr_64_t getIpaddr(getnamefunc getname, int sock, \
 		char *buff, const int bufferSize)
 {
     sockaddr_convert_t convert;
@@ -1106,7 +1106,7 @@ in_addr_t getIpaddr(getnamefunc getname, int sock, \
 	}
 	
 	if (convert.len > 0)
-	{
+	{   
         fc_inet_ntop(&convert.sa.addr, buff, bufferSize);
 	}
 	else
@@ -1114,7 +1114,13 @@ in_addr_t getIpaddr(getnamefunc getname, int sock, \
 		*buff = '\0';
 	}
 
-    return convert.sa.addr4.sin_addr.s_addr;  //DO NOT support IPv6
+    if (convert.sa.addr.sa_family == AF_INET) {
+        return convert.sa.addr4.sin_addr.s_addr;  
+    } else {
+		in_addr_64_t ip_addr = 0;
+		memcpy(&ip_addr, &((struct sockaddr_in6 *)&convert.sa.addr)->sin6_addr, sizeof(in_addr_64_t));
+        return ip_addr;
+    }
 }
 
 int getIpAndPort(getnamefunc getname, int sock,
@@ -1172,45 +1178,54 @@ char *getHostnameByIp(const char *szIpAddr, char *buff, const int bufferSize)
 	return buff;
 }
 
-in_addr_t getIpaddrByName(const char *name, char *buff, const int bufferSize)
+in_addr_64_t getIpaddrByName(const char *name, char *buff, const int bufferSize)
 {
-	struct in_addr ip_addr;
-	struct hostent *ent;
-	in_addr_t **addr_list;
+	struct addrinfo hints, *res, *p; 
+	int status; 
+	memset(&hints, 0, sizeof hints); 
+	hints.ai_family = AF_UNSPEC; // 支持IPv4和IPv6 
+	status = getaddrinfo(name, NULL, &hints, &res); 
+	if (status != 0) 
+	{ 
+        return INADDR_NONE;
+	} 
 
-	if ((*name >= '0' && *name <= '9') && 
-		inet_pton(AF_INET, name, &ip_addr) == 1)
-	{
-		if (buff != NULL)
-		{
-			snprintf(buff, bufferSize, "%s", name);
-		}
-		return ip_addr.s_addr;
-	}
+    for (p = res; p != NULL; p = p->ai_next)
+    {
+        if (p->ai_family == AF_INET) // 处理IPv4地址
+        {
+            struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
+            if (buff != NULL)
+            {
+                if (inet_ntop(AF_INET, &(ipv4->sin_addr), buff, bufferSize) == NULL)
+                {
+                    *buff = '\0';
+                }
+            }
 
-	ent = gethostbyname(name);
-	if (ent == NULL)
-	{
-		return INADDR_NONE;
-	}
+			freeaddrinfo(res);
+            return ipv4->sin_addr.s_addr;
+        }
+        else if (p->ai_family == AF_INET6) // 处理IPv6地址
+        {
+            struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
+            if (buff != NULL)
+            {
+                if (inet_ntop(AF_INET6, &(ipv6->sin6_addr), buff, bufferSize) == NULL)
+                {
+                    *buff = '\0';
+                }
+            }
 
-    addr_list = (in_addr_t **)ent->h_addr_list;
-	if (addr_list[0] == NULL)
-	{
-		return INADDR_NONE;
-	}
+			in_addr_64_t ip_addr = 0;
+			memcpy(&ip_addr, &ipv6->sin6_addr, sizeof(in_addr_64_t));
 
-	memset(&ip_addr, 0, sizeof(ip_addr));
-	ip_addr.s_addr = *(addr_list[0]);
-	if (buff != NULL)
-	{
-		if (inet_ntop(AF_INET, &ip_addr, buff, bufferSize) == NULL)
-		{
-			*buff = '\0';
-		}
-	}
-
-	return ip_addr.s_addr;
+			freeaddrinfo(res);
+            return ip_addr;
+        }
+    }
+    
+    return INADDR_NONE;
 }
 
 int getIpaddrsByName(const char *name,
@@ -1354,7 +1369,7 @@ int socketBind2(int af, int sock, const char *bind_ipaddr, const int port)
         }
         sprintf(bind_ip_prompt, "bind ip %s, ", bind_ipaddr);
     }
-
+	
 	if (bind(sock, &convert.sa.addr, convert.len) < 0)
 	{
 		logError("file: "__FILE__", line: %d, "
@@ -2173,20 +2188,22 @@ int getlocaladdrs(char ip_addrs[][IP_ADDRESS_SIZE], \
 	ifc1 = ifc;
 	while (NULL != ifc)
     {
-        struct sockaddr *s;
-        s = ifc->ifa_addr;
-        if (NULL != s && AF_INET == s->sa_family)
-        {
-            if (max_count <= *count)
-            {
-                logError("file: "__FILE__", line: %d, "\
-                        "max_count: %d < iterface count: %d", \
-                        __LINE__, max_count, *count);
-                freeifaddrs(ifc1);
-                return ENOSPC;
-            }
+		if(NULL == ifc->ifa_addr ){
+			continue;
+		}
 
-            if (inet_ntop(AF_INET, &((struct sockaddr_in *)s)-> \
+		if (max_count <= *count)
+		{
+			logError("file: "__FILE__", line: %d, "\
+					"max_count: %d < iterface count: %d", \
+					__LINE__, max_count, *count);
+			freeifaddrs(ifc1);
+			return ENOSPC;
+		}
+
+        if (AF_INET == ifc->ifa_addr->sa_family)
+        {
+            if (inet_ntop(AF_INET, &((struct sockaddr_in *)ifc->ifa_addr)-> \
                         sin_addr, ip_addrs[*count], IP_ADDRESS_SIZE) != NULL)
             {
                 (*count)++;
@@ -2199,6 +2216,22 @@ int getlocaladdrs(char ip_addrs[][IP_ADDRESS_SIZE], \
                         __LINE__, errno, STRERROR(errno));
             }
         }
+	
+	    if (AF_INET6 == ifc->ifa_addr->sa_family)
+        {
+            if (inet_ntop(AF_INET6, &((struct sockaddr_in6 *)ifc->ifa_addr)-> \
+                        sin6_addr, ip_addrs[*count], IP_ADDRESS_SIZE) != NULL)
+            {
+                (*count)++;
+            }
+            else
+            {
+                logWarning("file: "__FILE__", line: %d, " \
+                        "call inet_ntop fail, " \
+                        "errno: %d, error info: %s", \
+                        __LINE__, errno, STRERROR(errno));
+            }
+        }
 
         ifc = ifc->ifa_next;
     }
diff --git a/src/sockopt.h b/src/sockopt.h
index 11fd6b6..3a0b02f 100644
--- a/src/sockopt.h
+++ b/src/sockopt.h
@@ -26,6 +26,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netinet/tcp.h>
+#include <netdb.h>
 #include "common_define.h"
 
 #define FC_NET_TYPE_NONE          0
@@ -55,11 +56,11 @@ typedef struct fast_if_config {
     char name[IF_NAMESIZE];    //if name
     char mac[64];
     char ipv4[IP_ADDRESS_SIZE];
-    char ipv6[48];
+    char ipv6[IP_ADDRESS_SIZE];
 } FastIFConfig;
 
 typedef struct ip_addr_s {
-    char ip_addr[INET6_ADDRSTRLEN];
+    char ip_addr[IP_ADDRESS_SIZE];
     int socket_domain;
 } ip_addr_t;
 
@@ -344,9 +345,9 @@ int tcpprintkeepalive(int fd);
  *          sock: the socket
  *          buff: buffer to store the ip address
  *          bufferSize: the buffer size (max bytes)
- *  return: in_addr_t, INADDR_NONE for fail
+ *  return: in_addr_64_t, INADDR_NONE for fail
 */
-in_addr_t getIpaddr(getnamefunc getname, int sock, \
+in_addr_64_t getIpaddr(getnamefunc getname, int sock, \
 		char *buff, const int bufferSize);
 
 /** get ip address
@@ -370,14 +371,14 @@ int getIpAndPort(getnamefunc getname, int sock,
 */
 char *getHostnameByIp(const char *szIpAddr, char *buff, const int bufferSize);
 
-/** get by IPv4 address by it's hostname
+/** get by IPv4 or IPv6 address by it's hostname
  *  parameters:
  *          name: the hostname 
  *          buff: buffer to store the ip address
  *          bufferSize: the buffer size (max bytes)
- *  return: in_addr_t, INADDR_NONE for fail
+ *  return: in_addr_64_t, INADDR_NONE for fail
 */
-in_addr_t getIpaddrByName(const char *name, char *buff, const int bufferSize);
+in_addr_64_t getIpaddrByName(const char *name, char *buff, const int bufferSize);
 
 /** get by ip addresses by it's hostname
  *  parameters: