PfSense – DHCP Relay

dhcppfsense

I have 3 pfSense boxes acting as routers on a single subnet (172.22.12.0/26).

  • Router A – 172.22.12.1
  • Router B – 172.22.12.17
  • Router C – 172.22.12.33

I want Router A to be the only DHCP server. Router C has DHCP relay enabled that points to Router B. Router B then has DHCP relay enabled that points to Router A. Like this:

Router C –> Router B –> Router A (DHCP Server)

Router B gets an IP from Router A, but Router C does not. Any ideas why this configuration isn't working? Thanks.

Best Answer

Follow this post perhaps: Answer by Joe

Firewall rule recommended to add:

UDP * 67 - 68 * 67 - 68 * pass dhcp traffic

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