diff -pru dillo-cli/src/dillo.c dillo-local/src/dillo.c
--- dillo-cli/src/dillo.c	Tue Aug  6 18:18:38 2002
+++ dillo-local/src/dillo.c	Tue Aug  6 18:23:16 2002
@@ -50,15 +50,17 @@
 #define DILLO_CLI_HELP_MESSAGE \
    "\nUsage: dillo [OPTIONS] [URL|FILE]...\n"        \
    "Options:\n"                                      \
+   "  -l      allow only local host browsing.\n"      \
    "  -h      display this help message and exit.\n" \
    "  -v      display version info and exit.\n"      \
    "  URL     URL to browse.\n"                      \
    "  FILE    local FILE to view.\n"
 
-#define DILLO_CLI_OPTIONS "hv"
+#define DILLO_CLI_OPTIONS "hvl"
   
 #define DILLO_CLI_HELP     1 << 0
 #define DILLO_CLI_VERSION  1 << 1
+#define DILLO_CLI_LOCAL    1 << 2
 
 /*
  * Forward declarations
@@ -98,6 +100,9 @@ gint main(int argc, char *argv[])
             Dillo_print_version();
             return 0;
             break;
+         case 'l':
+            cli_option |= DILLO_CLI_LOCAL;
+            break;
          default:
             printf("Unknown option.\n");
             Dillo_print_help();
@@ -114,7 +119,7 @@ gint main(int argc, char *argv[])
    g_free(file);
 
    a_Prefs_init();
-   a_Dns_init();
+   a_Dns_init(cli_option & DILLO_CLI_LOCAL);
    a_Http_init();
    a_Mime_init();
    a_Cache_init();
diff -pru dillo-cli/src/dns.c dillo-local/src/dns.c
--- dillo-cli/src/dns.c	Tue Aug  6 18:03:56 2002
+++ dillo-local/src/dns.c	Tue Aug  6 18:19:48 2002
@@ -85,6 +85,7 @@ static gint Dns_timeout_client(gpointer 
 /*
  * Local Data
  */
+static gboolean dns_block_non_local;
 static DnsServer dns_server[G_DNS_MAX_SERVERS];
 static gint num_servers;
 static GDnsCache *dns_cache;
@@ -184,11 +185,13 @@ static void Dns_cache_add(char *hostname
 /*
  *  Initializer function
  */
-void a_Dns_init(void)
+void a_Dns_init(gboolean block_non_local)
 {
    gint i;
 
    DEBUG_MSG(5, "dillo_dns_init: Here we go!\n");
+   dns_block_non_local = block_non_local;
+
    dns_queue_size = 0;
    dns_queue_size_max = 16;
    dns_queue = g_new(GDnsQueue, dns_queue_size_max);
@@ -247,6 +250,8 @@ static void *Dns_server(void *data)
    } else {
       memcpy(&ip_addr, host->h_addr_list[0], sizeof(ip_addr));
       ip_addr = ntohl(ip_addr);
+      if (dns_block_non_local && (ip_addr & 0xff000000) != 0x7f000000)
+         ip_addr = 0;
    }
 
    /* write hostname to client */
diff -pru dillo-cli/src/dns.h dillo-local/src/dns.h
--- dillo-cli/src/dns.h	Tue Aug  6 18:03:56 2002
+++ dillo-local/src/dns.h	Tue Aug  6 18:19:48 2002
@@ -8,7 +8,7 @@
 extern "C" {
 #endif /* __cplusplus */
 
-void a_Dns_init (void);
+void a_Dns_init (gboolean block_non_local);
 void a_Dns_freeall(void);
 void a_Dns_ccc(int Op, int Br, ChainLink *Info, void *Data, void *ExtraData);