topic Re: weird route in Operating System - Linux

weird route

Leovino A. Trinidad, Jr — Mon, 15 Dec 2003 05:13:00 GMT

Hi all!

Can somebody explain it to me the following and what action do I have to make?

[root]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.9.200.51 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.97 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.134 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.167 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.212 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.3 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.81 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.49 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.66 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.82 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.99 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.48 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.67 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.164 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.68 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.117 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.146 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.179 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.178 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.53 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.177 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.5 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.129 gatekeeper 255.255.255.255 UGH 0 0 0 lo
192.9.200.26 gatekeeper 255.255.255.255 UGH 0 0 0 lo
169.254.251.26 gatekeeper 255.255.255.255 UGH 0 0 0 lo

This is the firstime I see this when I run the route command on the shell of redhat 7.1.

Hope you could help me on this.

Regards,

LAT

Re: weird route

Jerome Henry — Mon, 15 Dec 2003 05:23:34 GMT

Hi,

This is nothing strange. Those are the machines and hosts your Linux box knows. First is the others box address, third the maks (255.255.255.255 means that all are individual boxes, and your router don't know the network related), gatekeeper is your gateway name, what is strange is lo at the end, meaning that all those are to be reached through your loopback interface, that is to say that all these are seen as your own machine... Nothing wrong with it aprat from the fact that it won't help you reach any machine on the net.
Maybe could you run a 'neat' to set your NIC up properly ?

hth

J

Re: weird route

Jerome Henry — Mon, 15 Dec 2003 05:26:18 GMT

BTW, you can use
route del -host 192.9.2.51 to delete this host, and same for the others.

hth

J

Re: weird route

Mark Grant — Mon, 15 Dec 2003 06:09:26 GMT

Actually, it looks a bit odd to me.

You seem to have a netmask of 255.255.255.255. It makes for an exciting network but probably isn't what you want. I think this might be the reason you have a route for each machine because you don't actually have a network you can route to.

Re: weird route

Stuart Browne — Mon, 15 Dec 2003 18:54:19 GMT

If you didnt make these routes yourself, I would assume that 'IP Redirects' are left enabled on your machine.

Your machine can be told to ignore such requests (thus not populating your routing table like this) faily simply.

As it is, a populated routing table like this isn't going to hurt, but it's not terribly efficint (a network route, or default route pointed correctly would be more efficient).

Re: weird route

Michael Schulte zur Sur — Tue, 16 Dec 2003 16:49:46 GMT

Hi,

I too think, you have a netmask of 255.255.255.255, which doesnt make a lot of sense, for there is no ip part for the computer left, there should be at least one bit left for the computer address. I wonder, how it works at all. So every new address has to be addressed via gateway, even the host is in the same net.

greetings,

Michael

Re: weird route

Steven E. Protter — Tue, 16 Dec 2003 22:06:08 GMT

You've probably got gateways set up improperly in your ifcfg files in /etc/sysconfig/network-scripts

Post up an example or two and I'll recommend changes.

SEP