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Is it possible to have multiple public IP addresses (500) on one server running CentOS and switch them without restarting networking service.

I would like to use one public IP per specific service like sending mail, another for receiving mail or calling third party API.

The exact thing that I need is to somehow, when I run specific Python script for service - traffic will use public IP address defined in script.

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    The fact that you need to use 500 public addresses on one server is an early indication that you are doing something wrong.
    – dtoubelis
    Sep 13 '15 at 15:49
  • Please make sure you understand meaning of term "public IP address" and either rephrase your question or provide some context.
    – dtoubelis
    Sep 14 '15 at 0:39
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To add another IP address to your interface is simple:

 ip addr add 192.168.0.2/24 dev eth0 label eth0:1

Then in your Python code just bind to the IP address you want to use.

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    label eth0:1 can be omitted. And probably should be omitted. Sep 13 '15 at 17:05
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I will bind range of IPs to server using this tutorial then in Python I will to bind it correctly.

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