[ofw] [patch][tests][perftest] Make the server and client agree to work via IPv4.

[Hefty, Sean]

> 1. I don't see that this file exists in svn.
> [Irena] 	You can see the file in:
> svn://openib.tc.cornell.edu/gen1/trunk/tests/perftest. It was added in
> commit 2918.

Ok - I see this after updating my local tree.

> 
> 2. We want to support ipv6.
> [Irena]  	The IPv4 is used to open a socket in the beginning of the test
> just in order to exchange the connection info (lid, qp number) between the
> sides.
> 		This choice of IPv4 exists in the ib_XXXX_bw/ib_XXXX_lat tests
> as well, for example in the function pp_client_connect in the file
> 					tools\perftests\user\perf_utils.c

We should still support ipv6.  I don't see this sort of restriction placed on the Linux code.

I've seen this sort of problem before, but it's been so long ago that I don't remember if it was on Linux or Windows or what the resolution was.