[group:dhcp-relay]
programs=
{%- set relay_for_ipv6 = { 'flag': False } %}
{%- set add_preceding_comma = { 'flag': False } %}
{% for vlan_name in VLAN_INTERFACE %}
{# Append DHCPv4 agents #}
{% if VLAN and vlan_name in VLAN and 'dhcp_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcp_servers']|length > 0 %}
{% if add_preceding_comma.flag %},{% endif %}
{% set _dummy = add_preceding_comma.update({'flag': True}) %}
isc-dhcpv4-relay-{{ vlan_name }}
{%- endif %}
{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
{% set _dummy = relay_for_ipv6.update({'flag': True})  %}
{%- endif %}
{% endfor %}
{# Append DHCPv6 agents #}
{% if relay_for_ipv6.flag %}
{% if add_preceding_comma.flag %},{% endif %}
{% set _dummy = add_preceding_comma.update({'flag': True}) %}
dhcp6relay
{% endif %}