[root@fc3c linux-2.6.8]# patch -p1 < hidden-2.6.4-1.diff
patching file Documentation/filesystems/proc.txt
Hunk #1 succeeded at 1641 (offset 37 lines).
patching file Documentation/networking/ip-sysctl.txt
Hunk #1 succeeded at 623 with fuzz 2 (offset 75 lines).
patching file include/linux/inetdevice.h
patching file include/linux/sysctl.h
Hunk #1 succeeded at 391 (offset 17 lines).
patching file net/ipv4/arp.c
patching file net/ipv4/devinet.c
Hunk #1 succeeded at 805 (offset 15 lines).
Hunk #3 succeeded at 1338 (offset 15 lines).
[root@fc3c linux-2.6.8]#