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I have multiple servers with 2 LAN cards each.

I want to use their second LAN cards to connect them to each other using a network switch.

My question is - How do I 'join' the networks together on the OS level, using the private network ip range for the second connection.

Basically I want every server to connect to the Internet normally, except when using the 10.x.x.x ip range, in which case the local connection is to be used.

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1 Answer 1

Reset to default
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The server's routing table will naturally prefer directly connected routes.

Say that eth0 has IP address 192.168.0.10/24, and eth1 has 10.0.0.10/8, with default gateway only set on eth0. Then eth1 will be used for packets with a destination of 10.0.0.0/8, and eth0 for everything else but localhost.

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