Hi I have installed Ubuntu 8.10 LTS ver. want to set as router. I am having static ip on eth0 and private ip on eth1 /etc/networks/interfaces #primary interface autho eth0 address subnet xxx xxx xx # secondary interface address 192.168.0.2 subnet 255.255.255.0 network 192.168.0.0 broadcast x.x.x. saved /etc/sysctl.conf forwarding set as 1 when i restart networking service i am getting error sudo /etc/init.d/networking restart * Reconfiguring network interfaces... postconf: fatal: open /etc/postfix/main.cf: No such file or directory SIOCADDRT: File exists Failed to bring up eth0. * if-up.d/mountnfs[eth1]: waiting for interface eth0 before doing NFS mounts postconf: fatal: open /etc/postfix/main.cf: No such file or directory [ OK ] can't distribute internet......! can anybody guide me.........!