To configure custom DHCP options for a VM use the following command adapted

to your needs:

$ VBoxManage dhcpserver modify \

--netname test-0 --options --vm "Test Client" --slot 0 \

--id 0 --value "224=c0:a8:02:01:c0:a8:02:02" \

--id 0 --value "225=0:0"

Note that custom DHCP options must be specified with ID 0 and the actual

number in the value. This has technical reasons which may change in future

VirtualBox releases.

It corresponds to the following bit of ISC 'dhcpd.conf':

option sample1 code 224 = array of ip-address;

option sample2 code 225 = array of integer 8;

...

option sample1 192.168.2.1,192.168.2.2;

option sample2 0,0;

...