{%- set gateway = ".".join([ips[0], ips[1], ips[2], "1"]) -%}
{%- endif -%}
- {%- set networks = networks.update({key: {'interface_name': interface_name,
+ {#- set v=v.update(...) is unpredictable and breaks in older j2 -#}
+ {%- set _ = networks.update({key: {'interface_name': interface_name,
'bus_addr': bus_addr,
'vlan': vlan,
'network': network,