3.110.12. SubnetSelectionOption Previous topic Parent topic Child topic Next topic

This is an optional integer parameter that is used to enable the DHCP "Subnet Selection Option". The official RFC option number is 118 which is used as the default if this parameter does not specify other value. Early versions of the ISC DHCP server used option 211.
If the SubnetSelectionOption parameter is not defined, no Subnet Selection Option is added and any PoolHint value provided is used in the giaddr field in the DHCP request, instead of LocalAddress.
Here are examples of using SubnetSelectionOption:
# This sets the value to 211.
SubnetSelectionOption 211

# If the parameter is set but no value is defined, 118 is used.
SubnetSelectionOption

# Do not add any Subnet Selection Option.
#SubnetSelectionOption