number of IPs per interface

Alex Rousskov rousskov at
Thu Jul 26 16:24:05 UTC 2007

On Thu, 2007-07-26 at 13:40 +0200, Fast Jack wrote:

> I'm having a little trouble with the client-side of my polygraph
> setup. So far I am only using one machine as a polygraph client. On
> this machine I would like to have the robots send requests from as
> many IPs as possible. But so far I have not been able to create more
> than 73 additional IPs at eth0.

> If I'm not mistaken polygraph supports
> at most 1000 IPs per machine so that is not the problem.

Bugs and CPU/memory limitations notwithstanding, there is no limit of IP
addresses Polygraph can support.

> I have tried both run-time address creation and prenatal address
> creation (ip addr add .....) but for some reason the interface does
> not accept more than 73 IPs.
> Is there some kind of parameter that sets the maximum number of IPs
> per interface?
> If not, what else might b the problem?
> The machine is running Debian 4.0 with a kernel.

If you cannot add more than 73 aliases using system ifconfig tool, then
the problem is most likely outside of Polygraph. Please try ifconfig and
post the error message you are getting on the 73rd alias, if any.

Thank you,


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