Sign up ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

We have some crappy situation where we don't have control over the existing DHCP server on the network and where we need to add another BOOTP/DHCP server with the authoritative directive.

Our BOOTP/DHCP server is configured not to give any lease to non-apple devices but sadly, as it is authoritative it sends NAK to clients, preventing the "real" DHCP server to answer properly. As a result, some clients never get an address as long as our additional BOOTP/DHCP server is running.

What I'm looking for is a way for us to to prevent our BOOTP/DHCP (isc-dhcpd) server to ever reply with NAKs but to leave it as "authoritative".

Do you know of a setting to do that ?

Alternatively, is there an iptables rule I can use to only DROP outgoing DHCP NAK responses ? (I know this is crappy, but I don't really have a choice here...)

share|improve this question
Can you just completely block that DHCP server? Can you treat it like a rogue DHCP server? – Zoredache May 1 '13 at 17:02
@Zoredache In some situations this server must answer. The only thing I don't want, is the NAK responses. – ereOn May 1 '13 at 17:28

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.