[Openvpn-devel] Re: [Openvpn-users] Urgent: Limitation to 100 virtual tunnel devices??

[Claas H. <cla...@ju...>]

--Am Donnerstag, 1. Juli 2004 17:18 +0100 Jue...@am... 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);


-- 
 Claas Hilbrecht
 http://www.jucs-kramkiste.de