leasetime="${leasetime:-12h}"
start="$(dhcp_calc "${start:-100}")"
limit="${limit:-150}"
+ [ "$limit" -gt 0 ] && limit=$((limit-1))
eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
append args "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"