That’s it. If you used real hardware you now have a redundant setup. If you followed along on a virtual machine, hopefully you soon have a chance to do it on real hardware.

These are links to the various parts of this guide, in case you need to review:

• Part 1 - Introduction
• Part 2 - Routing and Packet Filter
• Part 3 - Network Services
• Part 4 - Redundant Routing and Packet Filter
• Part 5 - Redundant Network Services
• Part 6 - Conclusion

Credits and Additional Material

• The OpenBSD man pages are fantastic.
• https://home.nuug.no/~peter/pf/en/long-firewall.html
• https://sites.google.com/site/bsdstuff/dhcarp
• Thanks to Guy Godfroy for pointing out the stock DHCP server can do lease synchronization.