On 6 August 2016 at 20:51, Matt . <yamakasi.014 at gmail.com> wrote: > I was thinking about syncing the leases file but this might be not a good idea. > > Is it possible what I try to do ? Use DHCP Failover https://kb.isc.org/article/AA-00502/0/A-Basic-Guide-to-Configuring-DHCP-Failover.html