Migrating from ISC DHCP to dnsmasq or Kea DHCP in OPNsense

Video Description

In this guide, I demonstrate how to migrate from ISC DHCP to dnsmasq or Kea DHCP in OPNsense. I am going to assume you have upgraded from OPNsense 25.1 to 25.7 before attempting to migrate to dnsmasq or Kea since I will be discussing the export/import options for static DHCP leases which is available on OPNsense 25.7. OPNsense included that feature to help users migrate away from ISC DHCP. There are a number of nuances in how you may set up the DHCP and DNS options in OPNsense, but I will only cover a few of them. My website guide will have a bit more details than I will discuss in this video since I did not want to go down too many tangents to stay on topic. Be sure to check out my written guide if you wish to have more details!: https://homenetworkguy.com/how-to/migrate-from-isc-dhcp-to-dnsmasq-or-kea-dhcp-in-opnsense Chapters: 01:32 Assumptions 03:59 Which DHCP service to use? 08:12 Setting up dnsmasq 08:48 Export static DHCP leases 09:16 General dnsmasq settings 13:06 Configure DHCP ranges 18:00 Import static DHCP ranges 18:47 Disable router advertisements (radvd) 19:11 Local hostname lookups with Unbound DNS 21:49 Disable ISC DHCP and enable dnsmasq 23:26 Setting up Kea DHCP 25:14 Configure DHCPv4 ranges 26:46 Import static DHCPv4 ranges 27:20 Configure DHCPv6 ranges 30:58 Create static DHCPv6 reservations 31:34 Router advertisement options 32:06 Using IPv6 SLAAC addressing 33:22 Disable ISC DHCP and enable Kea DHCP EP80 Join this channel to get access to perks: https://www.youtube.com/channel/UCvdHQkQv8KpwMnKkitmUVTQ/join