title: ansible dynamic group based on IP range
body: <p>How to create variable group based on ip address-range in ansible inventory groups ? I have two groups of servers in different location. I want to create the two groups based on their IP range (two ranges for two locations) . I already  have groups based on distribution, prod, dev, test, qa ,dr in my host inventory. I know I can create a thr grouping using group_by. But How do I call them ? and How to assign a custom variable name to them ? 
  - hosts: all
    tasks:
      - group_by: key=network_{{ ansible_default_ipv4.network }}</p>
  
  <p>But how do I call them ?  and How to assign a custom variable name to them ? Is there a way that I could create a group once and store all the hosts in a  static inventory file. ?</p>