When both IPv4 and IPv6 are running, getaddrinfo indicates IPv6
rather than IPv4 and that currently causes a failure to connect to
the ACM server. Fix is to set the address family in the hint to
getaddrinfo to IPv4.
Signed-off-by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com>