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I just look at the code in FreeBSD, it handles 1000 tunnel by default:
case MOD_LOAD:
/* intitialize device */
mtx_init(&tapmtx, "tapmtx", NULL, MTX_DEF);
SLIST_INIT(&taphead);
clone_setup(&tapclones);
eh_tag = EVENTHANDLER_REGISTER(dev_clone, tapclone, 0,
1000);
if (eh_tag == NULL) {
clone_cleanup(&tapclones);
mtx_destroy(&tapmtx);
return (ENOMEM);
}
return (0);
Sit back and relax. :)
sam
Claas Hilbrecht wrote:
--Am Donnerstag, 1. Juli 2004 17:18 +0100 Juerg.VonBueren@xxxxxxx
schrieb:
We are running into trouble with more than 100 virtual tunnel devices .
The reported problem is as follows:
Jul 1 06:30:19 1100PRVC001 openvpn[15520]: Note: Cannot ioctl TUNSETIFF
I assume you need the following patch:
diff -urN linux-2.4.26.org/net/core/dev.c linux-2.4.26/net/core/dev.c
--- linux-2.4.26.org/net/core/dev.c Wed Apr 14 15:05:41 2004
+++ linux-2.4.26/net/core/dev.c Thu Apr 15 18:54:01 2004
@@ -619,8 +619,12 @@
/*
* If you need over 100 please also fix the algorithm...
+ *
+ * Maybe it's never needed but just to be sure we allow
+ * up to 1000 tun/tap devices.
+ *
*/
- for (i = 0; i < 100; i++) {
+ for (i = 0; i < 1000; i++) {
snprintf(buf,sizeof(buf),name,i);
if (__dev_get_by_name(buf) == NULL) {
strcpy(dev->name, buf);
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