Interface aliases

Chuck Swiger cswiger at
Tue Jun 28 17:16:29 GMT 2005

John Oxley wrote:
> I know that I can put at least 65,000 aliases on an interface using
> ifconfig alias.  What kind of affect does this have on the system load
> wise?

Benchmark it yourself, it will depend on your hardware and your workload.

As a general rule, you should have one IP per NIC.  Putting thousands of IP 
addresses on a single box is a misuse of limited IP space, unless you are using 
RFC-1918 addresses.  What is the actual problem you are trying to solve?


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