diff -up openssl-1.0.1-beta2/apps/s_apps.h.ipv6-apps openssl-1.0.1-beta2/apps/s_apps.h
--- openssl-1.0.1-beta2/apps/s_apps.h.ipv6-apps	2012-02-02 12:56:27.216889198 +0100
+++ openssl-1.0.1-beta2/apps/s_apps.h	2012-02-02 12:56:27.257889552 +0100
@@ -148,7 +148,7 @@ typedef fd_mask fd_set;
 #define PORT_STR        "4433"
 #define PROTOCOL        "tcp"
 
-int do_server(int port, int type, int *ret, int (*cb) (char *hostname, int s, unsigned char *context), unsigned char *context);
+int do_server(char *port, int type, int *ret, int (*cb) (char *hostname, int s, unsigned char *context), unsigned char *context);
 #ifdef HEADER_X509_H
 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
 #endif
@@ -156,10 +156,9 @@ int MS_CALLBACK verify_callback(int ok,
 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file);
 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key);
 #endif
-int init_client(int *sock, char *server, int port, int type);
+int init_client(int *sock, char *server, char *port, int type);
 int should_retry(int i);
-int extract_port(char *str, short *port_ptr);
-int extract_host_port(char *str,char **host_ptr,unsigned char *ip,short *p);
+int extract_host_port(char *str,char **host_ptr,char **port_ptr);
 
 long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 				   int argi, long argl, long ret);
diff -up openssl-1.0.1-beta2/apps/s_client.c.ipv6-apps openssl-1.0.1-beta2/apps/s_client.c
--- openssl-1.0.1-beta2/apps/s_client.c.ipv6-apps	2012-02-02 12:56:27.238889388 +0100
+++ openssl-1.0.1-beta2/apps/s_client.c	2012-02-02 12:56:27.258889561 +0100
@@ -563,7 +563,7 @@ int MAIN(int argc, char **argv)
 	int cbuf_len,cbuf_off;
 	int sbuf_len,sbuf_off;
 	fd_set readfds,writefds;
-	short port=PORT;
+	char *port_str = PORT_STR;
 	int full_log=1;
 	char *host=SSL_HOST_NAME;
 	char *cert_file=NULL,*key_file=NULL;
@@ -670,13 +670,12 @@ int MAIN(int argc, char **argv)
 		else if	(strcmp(*argv,"-port") == 0)
 			{
 			if (--argc < 1) goto bad;
-			port=atoi(*(++argv));
-			if (port == 0) goto bad;
+			port_str= *(++argv);
 			}
 		else if (strcmp(*argv,"-connect") == 0)
 			{
 			if (--argc < 1) goto bad;
-			if (!extract_host_port(*(++argv),&host,NULL,&port))
+			if (!extract_host_port(*(++argv),&host,&port_str))
 				goto bad;
 			}
 		else if	(strcmp(*argv,"-verify") == 0)
@@ -1260,7 +1259,7 @@ bad:
 
 re_start:
 
-	if (init_client(&s,host,port,socket_type) == 0)
+	if (init_client(&s,host,port_str,socket_type) == 0)
 		{
 		BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
 		SHUTDOWN(s);
diff -up openssl-1.0.1-beta2/apps/s_server.c.ipv6-apps openssl-1.0.1-beta2/apps/s_server.c
--- openssl-1.0.1-beta2/apps/s_server.c.ipv6-apps	2012-02-02 12:56:27.239889397 +0100
+++ openssl-1.0.1-beta2/apps/s_server.c	2012-02-02 12:56:27.259889570 +0100
@@ -929,7 +929,7 @@ int MAIN(int argc, char *argv[])
 	{
 	X509_VERIFY_PARAM *vpm = NULL;
 	int badarg = 0;
-	short port=PORT;
+	char *port_str = PORT_STR;
 	char *CApath=NULL,*CAfile=NULL;
 	unsigned char *context = NULL;
 	char *dhfile = NULL;
@@ -1010,8 +1010,7 @@ int MAIN(int argc, char *argv[])
 			 (strcmp(*argv,"-accept") == 0))
 			{
 			if (--argc < 1) goto bad;
-			if (!extract_port(*(++argv),&port))
-				goto bad;
+			port_str= *(++argv);
 			}
 		else if	(strcmp(*argv,"-verify") == 0)
 			{
@@ -1888,9 +1887,9 @@ bad:
 	BIO_printf(bio_s_out,"ACCEPT\n");
 	(void)BIO_flush(bio_s_out);
 	if (www)
-		do_server(port,socket_type,&accept_socket,www_body, context);
+		do_server(port_str,socket_type,&accept_socket,www_body, context);
 	else
-		do_server(port,socket_type,&accept_socket,sv_body, context);
+		do_server(port_str,socket_type,&accept_socket,sv_body, context);
 	print_stats(bio_s_out,ctx);
 	ret=0;
 end:
diff -up openssl-1.0.1-beta2/apps/s_socket.c.ipv6-apps openssl-1.0.1-beta2/apps/s_socket.c
--- openssl-1.0.1-beta2/apps/s_socket.c.ipv6-apps	2011-12-02 15:39:40.000000000 +0100
+++ openssl-1.0.1-beta2/apps/s_socket.c	2012-01-19 14:53:30.000000000 +0100
@@ -102,9 +102,7 @@ static struct hostent *GetHostByName(cha
 static void ssl_sock_cleanup(void);
 #endif
 static int ssl_sock_init(void);
-static int init_client_ip(int *sock,unsigned char ip[4], int port, int type);
-static int init_server(int *sock, int port, int type);
-static int init_server_long(int *sock, int port,char *ip, int type);
+static int init_server(int *sock, char *port, int type);
 static int do_accept(int acc_sock, int *sock, char **host);
 static int host_ip(char *str, unsigned char ip[4]);
 
@@ -234,57 +232,70 @@ static int ssl_sock_init(void)
 	return(1);
 	}
 
-int init_client(int *sock, char *host, int port, int type)
+int init_client(int *sock, char *host, char *port, int type)
 	{
-	unsigned char ip[4];
-
-	memset(ip, '\0', sizeof ip);
-	if (!host_ip(host,&(ip[0])))
-		return 0;
-	return init_client_ip(sock,ip,port,type);
-	}
-
-static int init_client_ip(int *sock, unsigned char ip[4], int port, int type)
-	{
-	unsigned long addr;
-	struct sockaddr_in them;
-	int s,i;
+	struct addrinfo *res, *res0, hints;
+	char * failed_call = NULL;
+	int s;
+	int e;
 
 	if (!ssl_sock_init()) return(0);
 
-	memset((char *)&them,0,sizeof(them));
-	them.sin_family=AF_INET;
-	them.sin_port=htons((unsigned short)port);
-	addr=(unsigned long)
-		((unsigned long)ip[0]<<24L)|
-		((unsigned long)ip[1]<<16L)|
-		((unsigned long)ip[2]<< 8L)|
-		((unsigned long)ip[3]);
-	them.sin_addr.s_addr=htonl(addr);
-
-	if (type == SOCK_STREAM)
-		s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
-	else /* ( type == SOCK_DGRAM) */
-		s=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
-			
-	if (s == INVALID_SOCKET) { perror("socket"); return(0); }
+	memset(&hints, '\0', sizeof(hints));
+	hints.ai_socktype = type;
+	hints.ai_flags = AI_ADDRCONFIG;
+
+	e = getaddrinfo(host, port, &hints, &res);
+	if (e)
+	{
+		fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(e));
+		if (e == EAI_SYSTEM)
+			perror("getaddrinfo");
+		return (0);
+		}
 
+	res0 = res;
+	while (res)
+		{
+		s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+		if (s == INVALID_SOCKET)
+			{
+			failed_call = "socket";
+			goto nextres;
+			}
 #if defined(SO_KEEPALIVE) && !defined(OPENSSL_SYS_MPE)
 	if (type == SOCK_STREAM)
 		{
-		i=0;
-		i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
-		if (i < 0) { perror("keepalive"); return(0); }
+			int i=0;
+			i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,
+				(char *)&i,sizeof(i));
+			if (i < 0) {
+				failed_call = "keepalive";
+				goto nextres;
+				}
 		}
 #endif
-
-	if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1)
-		{ closesocket(s); perror("connect"); return(0); }
+		if (connect(s,(struct sockaddr *)res->ai_addr,
+			res->ai_addrlen) == 0)
+			{
+			freeaddrinfo(res0);
 	*sock=s;
 	return(1);
 	}
 
-int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context)
+		failed_call = "socket";
+nextres:
+		if (s != INVALID_SOCKET)
+			close(s);
+		res = res->ai_next;
+		}
+	freeaddrinfo(res0);
+
+	perror(failed_call);
+	return(0);
+	}
+
+int do_server(char *port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context)
 	{
 	int sock;
 	char *name = NULL;
@@ -322,33 +333,45 @@ int do_server(int port, int type, int *r
 		}
 	}
 
-static int init_server_long(int *sock, int port, char *ip, int type)
+static int init_server(int *sock, char *port, int type)
 	{
-	int ret=0;
-	struct sockaddr_in server;
-	int s= -1;
+	struct addrinfo *res, *res0 = NULL, hints;
+	char * failed_call = NULL;
+	int s;
+	int e;
 
 	if (!ssl_sock_init()) return(0);
 
-	memset((char *)&server,0,sizeof(server));
-	server.sin_family=AF_INET;
-	server.sin_port=htons((unsigned short)port);
-	if (ip == NULL)
-		server.sin_addr.s_addr=INADDR_ANY;
-	else
-/* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */
-#ifndef BIT_FIELD_LIMITS
-		memcpy(&server.sin_addr.s_addr,ip,4);
-#else
-		memcpy(&server.sin_addr,ip,4);
-#endif
+	memset(&hints, '\0', sizeof(hints));
+        hints.ai_family = AF_INET6;
+tryipv4:
+	hints.ai_socktype = type;
+	hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
 	
-		if (type == SOCK_STREAM)
-			s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
-		else /* type == SOCK_DGRAM */
-			s=socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP);
+	e = getaddrinfo(NULL, port, &hints, &res);
+	if (e)
+		{
+		fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(e));
+		if (e == EAI_SYSTEM)
+			perror("getaddrinfo");
+		return (0);
+		}
 
-	if (s == INVALID_SOCKET) goto err;
+	res0 = res;
+	while (res)
+		{
+		s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+		if (s == INVALID_SOCKET)
+			{
+			failed_call = "socket";
+			goto nextres;
+			}
+		if (hints.ai_family == AF_INET6)
+			{
+			int j = 0;
+			setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
+				   (void *) &j, sizeof j);
+			}
 #if defined SOL_SOCKET && defined SO_REUSEADDR
 		{
 		int j = 1;
@@ -356,35 +379,49 @@ static int init_server_long(int *sock, i
 			   (void *) &j, sizeof j);
 		}
 #endif
-	if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
+
+		if (bind(s,(struct sockaddr *)res->ai_addr, res->ai_addrlen) == -1)
 		{
-#ifndef OPENSSL_SYS_WINDOWS
-		perror("bind");
-#endif
-		goto err;
+			failed_call = "bind";
+			goto nextres;
 		}
-	/* Make it 128 for linux */
-	if (type==SOCK_STREAM && listen(s,128) == -1) goto err;
-	*sock=s;
-	ret=1;
-err:
-	if ((ret == 0) && (s != -1))
+		if (type==SOCK_STREAM && listen(s,128) == -1)
 		{
-		SHUTDOWN(s);
+			failed_call = "listen";
+			goto nextres;
 		}
-	return(ret);
+
+		*sock=s;
+		return(1);
+
+nextres:
+		if (s != INVALID_SOCKET)
+			close(s);
+		res = res->ai_next;
 	}
+	if (res0)
+		freeaddrinfo(res0);
 
-static int init_server(int *sock, int port, int type)
+	if (s == INVALID_SOCKET)
 	{
-	return(init_server_long(sock, port, NULL, type));
+		if (hints.ai_family == AF_INET6)
+		{
+			hints.ai_family = AF_INET;
+			goto tryipv4;
+		}
+		perror("socket");
+		return(0);
+	}
+
+	perror(failed_call);
+	return(0);
 	}
 
 static int do_accept(int acc_sock, int *sock, char **host)
 	{
+	static struct sockaddr_storage from;
+	char buffer[NI_MAXHOST];
 	int ret;
-	struct hostent *h1,*h2;
-	static struct sockaddr_in from;
 	int len;
 /*	struct linger ling; */
 
@@ -431,135 +468,58 @@ redoit:
 */
 
 	if (host == NULL) goto end;
-#ifndef BIT_FIELD_LIMITS
-	/* I should use WSAAsyncGetHostByName() under windows */
-	h1=gethostbyaddr((char *)&from.sin_addr.s_addr,
-		sizeof(from.sin_addr.s_addr),AF_INET);
-#else
-	h1=gethostbyaddr((char *)&from.sin_addr,
-		sizeof(struct in_addr),AF_INET);
-#endif
-	if (h1 == NULL)
+
+	if (getnameinfo((struct sockaddr *)&from, sizeof(from),
+		buffer, sizeof(buffer),
+		NULL, 0, 0))
 		{
-		BIO_printf(bio_err,"bad gethostbyaddr\n");
+		BIO_printf(bio_err,"getnameinfo failed\n");
 		*host=NULL;
 		/* return(0); */
 		}
 	else
 		{
-		if ((*host=(char *)OPENSSL_malloc(strlen(h1->h_name)+1)) == NULL)
+		if ((*host=(char *)OPENSSL_malloc(strlen(buffer)+1)) == NULL)
 			{
 			perror("OPENSSL_malloc");
 			return(0);
 			}
-		BUF_strlcpy(*host,h1->h_name,strlen(h1->h_name)+1);
-
-		h2=GetHostByName(*host);
-		if (h2 == NULL)
-			{
-			BIO_printf(bio_err,"gethostbyname failure\n");
-			return(0);
-			}
-		if (h2->h_addrtype != AF_INET)
-			{
-			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
-			return(0);
-			}
+		strcpy(*host, buffer);
 		}
 end:
 	*sock=ret;
 	return(1);
 	}
 
-int extract_host_port(char *str, char **host_ptr, unsigned char *ip,
-	     short *port_ptr)
+int extract_host_port(char *str, char **host_ptr, 
+	     char **port_ptr)
 	{
-	char *h,*p;
+	char *h,*p,*x;
 
-	h=str;
-	p=strchr(str,':');
+	x=h=str;
+	if (*h == '[')
+		{
+		h++;
+		p=strchr(h,']');
 	if (p == NULL)
 		{
-		BIO_printf(bio_err,"no port defined\n");
+			BIO_printf(bio_err,"no ending bracket for IPv6 address\n");
 		return(0);
 		}
 	*(p++)='\0';
-
-	if ((ip != NULL) && !host_ip(str,ip))
-		goto err;
-	if (host_ptr != NULL) *host_ptr=h;
-
-	if (!extract_port(p,port_ptr))
-		goto err;
-	return(1);
-err:
-	return(0);
+		x = p;
 	}
-
-static int host_ip(char *str, unsigned char ip[4])
-	{
-	unsigned int in[4]; 
-	int i;
-
-	if (sscanf(str,"%u.%u.%u.%u",&(in[0]),&(in[1]),&(in[2]),&(in[3])) == 4)
-		{
-		for (i=0; i<4; i++)
-			if (in[i] > 255)
-				{
-				BIO_printf(bio_err,"invalid IP address\n");
-				goto err;
-				}
-		ip[0]=in[0];
-		ip[1]=in[1];
-		ip[2]=in[2];
-		ip[3]=in[3];
-		}
-	else
-		{ /* do a gethostbyname */
-		struct hostent *he;
-
-		if (!ssl_sock_init()) return(0);
-
-		he=GetHostByName(str);
-		if (he == NULL)
-			{
-			BIO_printf(bio_err,"gethostbyname failure\n");
-			goto err;
-			}
-		/* cast to short because of win16 winsock definition */
-		if ((short)he->h_addrtype != AF_INET)
+	p=strchr(x,':');
+	if (p == NULL)
 			{
-			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
-			return(0);
-			}
-		ip[0]=he->h_addr_list[0][0];
-		ip[1]=he->h_addr_list[0][1];
-		ip[2]=he->h_addr_list[0][2];
-		ip[3]=he->h_addr_list[0][3];
-		}
-	return(1);
-err:
+		BIO_printf(bio_err,"no port defined\n");
 	return(0);
 	}
+	*(p++)='\0';
 
-int extract_port(char *str, short *port_ptr)
-	{
-	int i;
-	struct servent *s;
+	if (host_ptr != NULL) *host_ptr=h;
+	if (port_ptr != NULL) *port_ptr=p;
 
-	i=atoi(str);
-	if (i != 0)
-		*port_ptr=(unsigned short)i;
-	else
-		{
-		s=getservbyname(str,"tcp");
-		if (s == NULL)
-			{
-			BIO_printf(bio_err,"getservbyname failure for %s\n",str);
-			return(0);
-			}
-		*port_ptr=ntohs((unsigned short)s->s_port);
-		}
 	return(1);
 	}