We use VXLAN over IPSEC with multiple VLANs and the current
configuration is working.
https://community.fortinet.com/t5/FortiGate/Technical-Tip-VXLAN-over-IPsec-for-multiple-VLANs-using-software/ta-p/195488https://community.fortinet.com/t5/FortiGate/...
