Separated virtual networks with same subnet range with 2 interface

Posted by Coolpet on Server Fault See other posts from Server Fault or by Coolpet
Published on 2013-11-04T12:06:35Z Indexed on 2013/11/04 15:57 UTC
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linux

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ip

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route

I'm having some problems with routing with the following:

I have a server with 2 interfaces. It has 1-1 alias contains the same subnet. the 2 interface is connected to 2 switch, which are separated from each other. Infrastructure:

Eth0      192.168.16.2/20
Eth0:eth0 192.168.1.222/20
Eth1      192.168.32.3/20
Eth1:eth1 192.168.1.223/20

I have a PC which has the IP address: 192.168.1.3/24

The problem is the next:

If PC is on subnet 1, I can ping it.
If PC is on subnet 2, I can't ping it.

traceroute shows the route is across 192.168.1.222

ping -I 192.168.1.223 192.168.1.3 is not working on subnet 2.

arp entries show the MAC address belonging to the correct interface (eth1 on subnet 2)

How can I force the server to look on both interface same ranged subnet for specific IP?

It searches only in the first subnet.

The routing table has these 2 entries:

192.168.0.0/20 dev eth0 proto kernel scope link src 192.168.1.222
192.168.0.0/20 dev eth1 proto kernel scope link src 192.168.1.223

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