while(reply = getreply())
          next unless reply.is_arp?
          company = OUI_LIST::lookup_oui_company_name(reply.arp_saddr_mac)
          print_good("#{reply.arp_saddr_ip} appears to be up (#{company}).")
          report_host(:host => reply.arp_saddr_ip, :mac=>reply.arp_saddr_mac)