/*
 * Returns a hexidecimal encoding, in String form, of the name of the
 * interface configured by boot(1M) followed by the DHCPACK reply from
 * the server.
 */
static VALUE uname_dhcp_cache()
{
   char buf[BUFSIZE];
   sysinfo(SI_DHCP_CACHE, buf, BUFSIZE);
   return rb_str_new2(buf);
}