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Here is my route -n output:


Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

And if I try to add a static route by this command:

route add -net 192.168.50.0 netmask 255.255.255.0 gw 192.168.50.1

I get the following output:

SIOCADDRT: No such process

Why that? Can anybody explain my the concept of adding static routes in linux.

If I also have a route-eth0 file under the /etc/sysconfig/network-scripts/ directory, with this line in it: 123.123.123.0/24 via 123.123.124.1, no effect is achieved after I restart the network.

So, can anybody give me some explanations, links or related stuff to read on this?

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1 Answer 1

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# ip route add xxx.xxx.xxx.0/ via xxx.yyy.zzz.qqq

Is also valid syntax, but methinks that the error you are getting is a fouled up way of telling you:

"cannot route 192.168.50.0 through 192.168.50.1, because i don't know how to get to 192.168.50.1 in the first place."

Note that 192.168.50.1 is in the 192.168.50.0 network.

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  • This answer is plausible, but I'd need artaxerxe to show his interface table (ifconfig -a) to be sure.
    – Warren Young
    Commented Jan 17, 2012 at 0:57
  • Look, if you had an (up) interface already configured on 192.168.50.0, you would not need to manually add routes, because it would already be there (ip route show) as a part of the interface activation process. "ifconfig -a", of course, should tell the same story, as should "ip addr show". What is preventing you from running these commands?
    – Alien Life Form
    Commented Jan 17, 2012 at 9:34

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