Question about dhcp option 209 - 211
I was trying to add option 209-211 in my dhcpd.conf but somehow it doesn't work, keep showing as an unknown option. Since my version is isc-dhcpd-4.3.5, I followed the format in https://kb.isc.org/docs/isc-dhcp-41-manual-pages-dhcp-options Which should be looked like 'option loader-reboottime 30' But I got this after restart my isc-dhcp-server
dhcpd[443722]: /etc/dhcp/dhcpd.conf line 12: unknown option dhcp.loader-reboottime
dhcpd[443722]: option loader-reboottime 30
sh[443722]: /etc/dhcp/dhcpd.conf line 12: unknown option dhcp.loader-reboottime
sh[443722]: option loader-reboottime 30
Did I set anything inappropriate? Thanks for the reply