add Default interface parameter

defaults/main.yml

@@ -24,3 +24,4 @@ nomad_host_networks:
 nomad_allow_privileged: False
 nomad_plugins_podman: False
 nomad_docker_allow_caps: []
+nomad_client_network_interface:

templates/config.hcl.j2

@@ -9,6 +9,9 @@ enabled = {{ nomad_server |lower }}
 
 client {
   enabled       = true
+{% if nomad_client_network_interface %}
+  network_interface = "{{ nomad_client_network_interface }}"
+{% endif %}
 {% for nomad_host_volume in nomad_host_volumes %}
     host_volume "{{ nomad_host_volume['name'] }}" {
         path = "{{ nomad_host_volume['path'] }}"