Using Ubuntu 9.1, I get the error "SIOCADDRT: No such process" whenever I try to set a static route using

sudo route add -net dest netmask 255.255.255.0 gw gateway

and

sudo ip route add dest/24 via gateway dev eth0

gives me "RTNETLINK answers: No such process".

From googling, it looks like others have had this problem, but I haven't found any working solutions yet. Anyone have any idea how to fix this?

edit: Ok, finally found the issue. The gateway has to be on the same subnet... ugh, is there anyway to use a gateway on a different subnet without tunnels? I can ping the machine I want to be the gateway, so I feel like I should be allowed to set it as a next hop for specific addresses.

It sounds like you want to reach networks beyond this machine that is not on your local lan segment. The way to do that is to set up proper routing on this machine.

quote: "edit: Ok, finally found the issue. The gateway has to be on the same subnet... ugh, is there anyway to use a gateway on a different subnet without tunnels? I can ping the machine I want to be the gateway, so I feel like I should be allowed to set it as a next hop for specific addresses."

I was about to say the same thing. I just ran into the same issue.

What I did was enter the netmask you are currently using. Also note that adding it this was will get removed upon a reboot.

I ended up adding the same line into rc.local instead. " /sbin/route add ... ... "