[SOLVED] routing table issue

[swaan]

I'm having some routing problems with a machine and can't figure out why.

eth0 is in 172.17.192.0/20 network.

I'm trying to connect from a different network - 172.17.16.* but with no avail.
I suspect it won't use the gateway.
Is this a metric problem?

Kernel IP routing table
Destination Gateway Genamsk Flags Metric Ref Use Iface
139.10.0.0 * 255.255.0.0 U 0 0 0 eth1
172.17.0.0 * 255.255.0.0 U 0 0 0 eth0
default 172.17.198.110 0.0.0.0 UG 0 0 0 eth0

Thanks!

[HROAdmin26]

You have your network sizes mixed up.

eth0 is in 172.17.192.0/20 network

This is a network that spans 172.17.192.0 => 172.17.207.255

But, your eth0 NIC has a subnet mask configured of 255.255.0.0 *which is* 172.17.0.0/16

When trying to send packets, the kernel thinks that eth0 is on the same network as the destination (172.17.16.X). It sends an arp, gets no response, and then says it can't reach destination host.

You need to fix the subnet mask on eth0.

[swaan]

Of course!



Thanks a lot, I really appreciate