Description: This example shows how to get the local machine s IP addresses.
Yes, "addresses," plural. You can count on seeing at least two
addresses on most machines: one for the loopback interface (127.0.0.1)
and at least one for an external network interface. It is not at all
uncommon for a single machine to have multiple network interfaces:
a PC on a LAN with a modem connected to the Internet, for instance.
The loopback interface lets two programs running on a single machine
talk to each other without involving hardware drivers.
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