In the Boot - Up Process during Initilaization Process Linux puts the route entries into the Linux route table ( Local as well as Main). The fib_netdev_event adds entry into the table .This is a notifier call which gets fired when the network driver starts , restarts etc.. These route information must be stored in some file. (eg. the dev name, the netmask , the network id etc ) I want to know the name of the file. i.e from which configuartion file does it get the information to put the exact entries into the linux static routing table??? Thanks Lakshmi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/