I don't think the file exists if you don't have IP forwarding. The echo command would create one for you in this case. Rasit According to Victor:

Hi, all

I'm testing some program on SDK2.0, which has Linux running on StrongARM(the kernel version is 2.3.99-pre3-rmk3-np2). I wonder how to enable ip_forwarding on that version. It was said that you can use "echo 1 > /proc/sys/net/ipv4/ip_forwarding" to enable it on recent version, but I can't find that file on StrongARM.

Thanks

Victor

-- M. Rasit Eskicioglu E-mail: rasit@cs.umanitoba.ca Department of Computer Science Phone : (204) 474-8835 (Office) 528 Machray Hall (204) 474-8313 (Messages) University of Manitoba Fax : (204) 474-7609 Winnipeg, Manitoba R3T 2N2 Canada URL : http://www.cs.umanitoba.ca/~rasit