diff -up tcp_wrappers_7.6/hosts_ctl.c.patch17 tcp_wrappers_7.6/hosts_ctl.c

--- tcp_wrappers_7.6/hosts_ctl.c.patch17	1994-12-28 17:42:28.000000000 +0100

+++ tcp_wrappers_7.6/hosts_ctl.c	2008-08-29 09:45:12.000000000 +0200

@@ -29,10 +29,12 @@ char   *user;

 {

     struct request_info request;

-    return (hosts_access(request_init(&request,

-				      RQ_DAEMON, daemon,

-				      RQ_CLIENT_NAME, name,

-				      RQ_CLIENT_ADDR, addr,

-				      RQ_USER, user,

-				      0)));

+    request_init(&request, RQ_DAEMON, daemon,

+			   RQ_CLIENT_NAME, name,

+			   RQ_CLIENT_ADDR, addr,

+			   RQ_USER, user,

+			   0);

+    sock_hostnofd(&request);

+

+    return (hosts_access(&request));

 }

diff -up tcp_wrappers_7.6/socket.c.patch17 tcp_wrappers_7.6/socket.c

--- tcp_wrappers_7.6/socket.c.patch17	2008-08-29 09:45:12.000000000 +0200

+++ tcp_wrappers_7.6/socket.c	2008-08-29 09:45:12.000000000 +0200

@@ -130,6 +130,51 @@ struct request_info *request;

     request->server->sin = &server;

 }

+/* sock_hostnofd - look up endpoint addresses and install conversion methods */

+

+void    sock_hostnofd(request)

+struct request_info *request;

+{

+    static struct sockaddr_storage client;

+    struct addrinfo hints, *res;

+    int     ret;

+    char    *host;

+

+    /* If the address field is non-empty and non-unknown and if the hostname

+     * field is empty or unknown, use the address field to get the sockaddr

+     * and hostname. */

+    if (strlen(request->client->addr) &&

+	    HOSTNAME_KNOWN(request->client->addr) &&

+	    (!strlen(request->client->name) ||

+		!HOSTNAME_KNOWN(request->client->name)))

+	host = request->client->addr;

+    else

+	return;

+

+    memset(&hints, 0, sizeof(hints));

+    hints.ai_family = AF_INET6;

+    hints.ai_socktype = SOCK_STREAM;

+    hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;

+

+    ret = getaddrinfo(host, NULL, &hints, &res;;

+    if (ret != 0) {

+	hints.ai_family = AF_INET;

+	ret = getaddrinfo(host, NULL, &hints, &res;;

+    }

+

+    if (ret != 0) {

+	tcpd_warn("can't resolve hostname (%s): %s", host, gai_strerror(ret));

+    } else {

+	sock_methods(request);

+

+	memcpy(&client, res->ai_addr, res->ai_addrlen);

+	request->client->sin = (struct sockaddr *)&client;

+	freeaddrinfo(res);

+

+	request->client->name[0] = 0;

+    }

+}

+

 /* sock_hostaddr - map endpoint address to printable form */

 void    sock_hostaddr(host)

diff -up tcp_wrappers_7.6/tcpd.h.patch17 tcp_wrappers_7.6/tcpd.h

--- tcp_wrappers_7.6/tcpd.h.patch17	2008-08-29 09:45:12.000000000 +0200

+++ tcp_wrappers_7.6/tcpd.h	2008-08-29 09:45:12.000000000 +0200

@@ -167,6 +167,7 @@ extern char *eval_server __P((struct req

 /* look up endpoint addresses */

 extern void sock_host __P((struct request_info *));

+extern void sock_hostnofd __P((struct request_info *));

 /* translate address to hostname */

 extern void sock_hostname __P((struct host_info *));

 /* address to printable address */