DHCP_TSIG_KEY_NAME=dhcpupdate
DHCP_TSIG_KEY_ALGO=hmac-md5
DHCP_TSIG_KEY_SECRET=change_it

DHCP_DNS_MASTER=10.15.100.1
DHCP_DNS_SERVER=10.15.100.1
DHCP_TFTP_SERVER=10.15.100.1
DHCP_ROUTERS=10.15.100.1

DHCP_DOMAIN=example.com
DHCP_SITE_DOMAIN=site.example.com
DHCP_DYN_IPS_DOMAIN=dhcp.site.example.com
DHCP_REV_DOMAIN=100.15.10.in-addr.arpa.

DHCP_SUBNET=10.15.100.0
DHCP_NETMASK=255.255.255.0
DHCP_IP_FIRST=10.15.100.50
DHCP_IP_LAST=10.15.100.250
DHCP_BROADCAST=10.15.100.255