[dnsservers:children]
primary
secondary

[dnsservers:vars]
service=bind
fwsvc=dns

[primary]
serverd.lab.example.com

[secondary]
serverb.lab.example.com
serverc.lab.example.com

[caching_ns]
servera.lab.example.com

[caching_ns:vars]
service=unbound
fwsvc=dns

[clients]
workstation.lab.example.com