The /etc/rc.d/init.d/networking restart command which works under Fedora gives command not found. A quick google for restarting eth0 suggests /etc/init.d/networking restart command for Ubuntu 5.10. which appears to have worked as it reports that reconfiguring network interfaces is OK. A ping of the router’s ip says that the network is unreachable.

A sudo ifdown eth0 reports interface eth0 not configured.

A sudo dhclient -r eth0 reports that it is now listening on eth0 and the correct MAC address. A ping still reports that the network is unreachable.

There is no inet addr line for eth0 in the ifconfig -a output, which is likely the cause. Now if I can only add it in manually…

I’ll try sudo ip address add eth0 followed by IP - this tells me an inet prefix is expected rather than “eth0″.

[To be continued after lunch…]