mcedit /var/www/billing/config/dhcp/global.template
 
option domain-name "ourisp";
option domain-name-servers 8.8.8.8;
default-lease-time 3600;
max-lease-time 43200;
authoritative;
ddns-update-style none;
log-facility local7;
one-lease-per-client true;
deny duplicates;
 
shared-network ourisp {
{SUBNETS}
}