I'm trying to figure out how to configure a redundant dhcp server. In dhcpd(8) I see that the options -y and -Y implement "synchronisation of the lease allocations to a number of dhcpd daemons", anyway, in dhcpd.conf(5) I can't find anywhere any statement that sets the dhcp server as 'primary' or 'backup'.
Is a carp-like mechanism put in place with synchronisation? That is, in carp I can see the "state master" or "state backup", I would expect something similar for dhcpd's in synchronisation mode. Or, dhcrelay(8) must be used for redundancy? If yes, how?
