[Time]
# Sychronize to our (stratum 2) NTP server, to ensure our network has a
# consistent time.
{%- set ntp = [] -%}
{%- for host in groups['NTP_master'] -%}
{%- set _ = ntp.append(ipsec[ hostvars[host].inventory_hostname_short ]) -%}
{%- endfor %}

NTP={{ ntp | join(' ') }}