Hi Joost & all,

for completeness' sake a follow-up:

In the source code of dhcpd form ISC you will find that DHCPINFORM packets are ignored if the dhcpd is not authoritative for the corresponding subnet. I couldn't find that in the manual page of dhcpd, which only mentions not sending DHCPNAK when the server isn't configured as authoritative.

On the net, someone stated that when the dhcp server is not authoritative, some information is not passed out and that slp information is one of these bits of info. I couldn't easily identify something like that in the source code, but that doesn't mean that the statement is actually wrong.