если и еще с регистровой переменной stdout в ansible playbook

Question

Team,

Моя цель - запустить команду dig для fqdn и получить его IP-адрес.Затем по IP возвращается или не печатается сообщение.вроде как если и еще.этот подход правильный, потому что я получаю ошибку в первый раз и работает во второй раз работает.

-
  name: Test connectivity to target servers
  hosts: all
  vars_files:
           - vars.yaml
  tasks:
      - name: Ping test
        ping:

      - name: DNS test
        command: "dig +short {{ target_dns_host }} a"
        register: dns_result

      - name: "Validate DNS server"
        debug:
          msg: "Could not resolve DNS server '{{ target_dns_host }}' "
        when: dns_result.stdout == ""

      - name: "Validate DNS server"
        debug:
          msg: "Resolved DNS server '{{ target_dns_host }}' '{{ dns_result.stdout }}' "
        when: dns_result.stdout != ""

выход из первого запуска ниже

ansible-playbook playbook-ping-dns-test.yaml -i inventory.txt 

PLAY [Test connectivity to target servers] ********************************************************************************************************************

TASK [Gathering Facts] ****************************************************************************************************************************************
ok: [target1]

TASK [Ping test] **********************************************************************************************************************************************
ok: [target1]

TASK [DNS test] ***********************************************************************************************************************************************

fatal: [target1]: FAILED! => {"changed": true, "cmd": ["dig", "+short", "www.google.com", "a"], "delta": "0:00:15.011879", "end": "2019-09-25 16:25:23.808746", "msg": "non-zero return code", "rc": 9, "start": "2019-09-25 16:25:08.796867", "stderr": "", "stderr_lines": [], "stdout": ";; connection timed out; no servers could be reached", "stdout_lines": [";; connection timed out; no servers could be reached"]}
    to retry, use: --limit @/home/osboxes/ansible-validate-maglev/playbook-ping-dns-test.retry

PLAY RECAP ****************************************************************************************************************************************************
target1                    : ok=2    changed=0    unreachable=0    failed=1 

выход из второго запуска ниже

PLAY [Test connectivity to target servers] ********************************************************************************************************************

TASK [Gathering Facts] ****************************************************************************************************************************************
ok: [target1]

TASK [Ping test] **********************************************************************************************************************************************
ok: [target1]

TASK [DNS test] ***********************************************************************************************************************************************
changed: [target1]

TASK [Validate DNS server] ************************************************************************************************************************************
skipping: [target1]

TASK [Validate DNS server] ************************************************************************************************************************************
ok: [target1] => {
    "msg": "Resolved DNS server 'www.google.com' '172.217.11.164' "
}

PLAY RECAP ****************************************************************************************************************************************************
target1                    : ok=4    changed=1    unreachable=0    failed=0