There are 4 network Interfaces, how can we find which one
is Primary.

Answer Posted / ponnuswamy senthil

You can use "netstat -nr" in which it displays the ip
address of the interface individually, even if you have
VMware machines in your system,
One more command is "mii-too" in that it displays the
interface status is up when you connect the network cable.
(eg) mii-tool eth0
eth0- link ok up. Negotiated
eth1- no link

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