[wplug] Mandrake and routing

[Keir Josephson]

Try limiting the range of your subnet mask on eth1. Try 255.255.255.252 
or 248, for example. What's the IP on eth1?

-Keir

On May 10, 2004, at 11:18 AM, Bill Moran wrote:

> I'm having some trouble convincing Mandrake to set up a routing table 
> that works
> on a particular network.  The table I need looks like this:
>
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  
> irtt Iface
> 66.178.50.113   0.0.0.0         255.255.255.255 UH       40 0          
> 0 eth1
> 10.1.1.0        0.0.0.0         255.255.255.0   U        40 0          
> 0 eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          
> 0 lo
> 0.0.0.0         66.178.50.113   0.0.0.0         UG       40 0          
> 0 eth1
>
> The problem is that the default gateway (66.178.50.113) is on the 
> local network
> (i.e. it's plugged into the same hub as eth1 on this machine) but the 
> rest of
> the machines with similar IPs are NOT on that network.  Mandrake 
> throws together
> a routing table like this:
>
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  
> irtt Iface
> 66.178.50.0     0.0.0.0         255.255.255.0   UH       40 0          
> 0 eth1
> 10.1.1.0        0.0.0.0         255.255.255.0   U        40 0          
> 0 eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          
> 0 lo
> 0.0.0.0         66.178.50.113   0.0.0.0         UG       40 0          
> 0 eth1
>
> Which causes the machine to be unable to contact hosts on the 
> 66.178.50/24 subnet
> (those hosts are not on the local network, it needs to go through the 
> gateway to
> get to them, but the routing table above doesn't understand that)
>
> I can manually fix the problem by doing this:
> /sbin/route add -host 66.178.50.113 dev eth1
> /sbin/route delete -net 66.178.50.0 netmask 255.255.255.0
>
> Now, I couldn't figure out a way to configure Mandrake to just do this 
> correctly,
> so I decided to brute-force it and I added the previous two commands 
> to a script
> in /etc/rc3.d/Z99routefix
>
> But it doesn't seem to be working, as a reboot causes the machine to 
> go back to
> being broken (i.e. the routing table that Mandrake constructs that 
> routes wrong)
>
> Any suggestions as to what I did wrong in the script, or a better way 
> to handle
> things?
>
> -- 
> Bill Moran
> Potential Technologies
> http://www.potentialtech.com
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