DHCP requests not routing over IPSEC

I have a DHCP server running at head office on 192.168.100.21 which is a Windows Server that has a Sophos as it's gateway

The branch office has a Sophos

There is an IPSEC tunnel between the two Sophos units

The branch office has a DHCP relay pointing to the head office server 192.168.100.21

I've setup SNAT and IPSEC routes

The DHCP server isn't responding to the requests across the IPSEC

What am I missing?



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[edited by: Raphael Alganes at 3:21 AM (GMT -8) on 16 Feb 2024]