Mikrotik:DHCP Options
From My notepad
Here are some defaults I use:
/ ip dhcp-server option add name="Time Offset" code=2 value="-21600" add name="NTP Servers" code=42 value="129.6.15.28, 129.6.15.29" add name="Boot Server Hostname" code=66 value="10.10.20.250" add name="Bootfile Name" code=67 value="pxelinux.0"