--- linux-2.6.21.1-original/net/ipv4/ipconfig.c	2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1/net/ipv4/ipconfig.c	2007-06-08 15:27:58.000000000 +0200
@@ -209,6 +209,7 @@
 			able &= ic_proto_enabled;
 			if (ic_proto_enabled && !able)
 				continue;
+			dev->mtu=9000;
 			oflags = dev->flags;
 			if (dev_change_flags(dev, oflags | IFF_UP) < 0) {
 				printk(KERN_ERR "IP-Config: Failed to open %s\n", dev->name);