[Linux-Anyway] Re: Uh-oh -- what have I done?
- From: horrorvacui@xxxxxxx
- To: Linux-Anyway@xxxxxxxxxxxxx
- Date: Sat, 15 Mar 2003 23:55:25 +0100
On Sat, 15 Mar 2003 11:02:56 -0800 (PST)
Meph Istopheles <Meph@xxxxxxxxxxxxxxxxxxx> wrote:
>
> Hey,
>
> Think I've really lost it now. In trying to find ~some~ way to
> route between my private network & the net through my Linux box,
> I'd mad some changes via linuxconf. Now my table looks really
> weird:
>
> /sbin/route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref
> Use Iface
> Rhiannon.Aeon-A Ra-Hoor.Aeon-AL 255.255.255.255 UGH 0 0
> 0 eth0
>
> [Uh, if Riannon, 10.0.0.3, shows up at all, shouldn't it have
> 255.255.255.0?]
No, what you have here is a host-route. All bits of the netmask are 1's,
so the address is valid in full. This is not a route to a network, it's a
route to a host. Look at mine:
23:10:31 root@www:/opt/dnloads/bttv-0.7.92 # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.19.89.138 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.1 0.0.0.0 255.255.255.255 UH 1 0 0 dummy0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 172.19.89.138 0.0.0.0 UG 0 0 0 ppp0
I have two host-routes, one to machine's own interface (don't ask, I've no
idea what it's good for either) and one to the ADSL "modem". I have two
private range networks here: 192.168.0.0 and 10.0.0.0, both with
255.255.255.0, and I have two routes to them: 10.0.0/24 is reachable via
interface eth1, and 192.168.0/24 via eth0. That's all I need to assure
that my machine can talk with both networks, and that's all you need as
well.
Your kernel routing table does look a bit funny... Could you please repost
the output of route with the -n argument, and the ifconfig output for
eth's as well? Would be a bit easier to read ;-)
By the way, I'm trying to write a firewall script so I can ditch ipchains
in favour of iptables (which would then probably do for you what it does
for me), and I discovered that during my attempts to configure the kernel
as lean as possible I excluded some important modules. Bugger. I
recompiled it and found that it screwed up my bttv modules. I recompiled
them as well, but it won't work. I remember that installing bttv needed a
bit of hacking when I did it last time, but, that's all I can remember.
The joys of Linux.
Cheers
--
Horror Vacui
Registered Linux user #257714
Go get yourself... counted: http://counter.li.org/
- and keep following the GNU.
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