I've read the posting from Nov.15, 2007 with regards to this issue and I have tried all mentioned ideas without success.

I have 2 NICs each on their own separate VLAN:

network1 server ip gw-
network2 server ip gw-

All the information for router, and nameservers is being pushed out properly, but option 78 for SLP DA is not. I have made the server authoritative, and I have also tried putting the configured options at all levels (pool, subnet, service) without success. I have also modified the dhcpd.conf file to make sure authoritative was present.

Seems like a common problem with OES2 Linux...had no problems with Netware with this option...