> I have tried to look in the archives(October 2011) and found the post "Duplicate DHCPACK from a failover pair", > seems like the problem I have, only that the proposed solution is not visible, because the link is not working. https://lists.isc.org/pipermail/dhcp-users/2009-July/009478.html Steinar Haug, Nethelp consulting, sthaug at nethelp.no