Geneve tunneling for AWS GWLB

Hello Renato.

This message is displayed when:

"The BIG-IP system receives a RST acknowledgement (ACK) in response to terminating a service check."

REF - https://support.f5.com/csp/article/K13223

Have you checked that your self-ip is allowing that communication?

REF - https://support.f5.com/csp/article/K17333

I recommend you to follow this guidelines:

https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-tmos-tunnels-ipsec-13-0-0/1.html

Regards,

Dario.