I have 4 multi-homed machine, which have 3 nc and various ip address
per nc. This is done because of HACMP and different service running on
this machines.

I have on each machine a daemon giving some information, listening on
all IPs. This daemon is pretty slow. I like to speed it up reading
directly the local info, without running through the network.

I have the service hostname so i can get the ip address with
gethostbyname. How can i test if this address is local to this
machine ?

The only way i found is running "ifconfig -a" and parsing the output,
but i hope there is a function that gives the same result.

Does Anyone know it ?

Thank you
MP

Two options come to mind... You can look into the kernel's network
structures via /dev/kmem and knlist (not that bad, actually), or since you
mentioned HACMP, you might have more interesting and useful results by
looking at the API used by clstat. That way, you could determine if the
HACMP resource group you wanted was local to the machine...

-Chris

On Tue, 12 Jun 2007 16:22:47 +0000, piccinini.massimiliano wrote:

> I have 4 multi-homed machine, which have 3 nc and various ip address
> per nc. This is done because of HACMP and different service running on
> this machines.
>
> I have on each machine a daemon giving some information, listening on
> all IPs. This daemon is pretty slow. I like to speed it up reading
> directly the local info, without running through the network.
>
> I have the service hostname so i can get the ip address with
> gethostbyname. How can i test if this address is local to this
> machine ?
>
> The only way i found is running "ifconfig -a" and parsing the output,
> but i hope there is a function that gives the same result.
>
> Does Anyone know it ?
>
> Thank you
> MP