dear kernel brothers, i added one printk statement innetif_rx function which is in net/core/dev.c and i compiled by using gcc -D __KERNEL__ -DMODULE -I/usr/src/linux-2.4.20-8/include -Wall -O2 dev.c it compiled fine but it is showing error kernel version mismath dev.o is compiled for 2.4.20-8custom but this kernel is 2.4.20-8 if insmod dev.o is typed but if insmod -f dev.o is typed , it is showing other errors i.e unresolved symbols in dev.o so please send reply and thanks in advance.............. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/