Simple definition
An object representing one or more IP addresses used for the SNAT.
Technical definition
IP-OI allows you to translate source addresses to a defined IP or range instead of simply using the output interface address.
What is it used for ?
Release certain streams with a specific public IP.
Practical example
A server SMTP can use a dedicated public IP via an IP pool.
Common issues
- Pool not driven by the operator
- Overlap with VIP
- Bad policy NAT
Related terms
Key takeaway: Exact behavior and commands may vary depending on versions, products and architectures.