Deny IP due to Land Attack

[00u18jg7x27DHjRMh5d7]

I randomly keep getting the following on my Firepower console "Deny IP due to Land Attack from <outside port IP> to <outside port IP>

I have read a few threads about this and using the information I have not found the source or cause. This just started about a week ago and the system has been running for 6 months so I have been able to rule out Hair Pin from VPN causing it. 

I have not seen any traffic matching using Cap asp type asp-drop all, or other captures. 

Hoping someone has seen this and knows a resolution, I'm sure the traffic is benign but would like to get it out of the logs. 

[MHM Cisco World]

Hairpin of vpn anyconnect 

You use nat (out to out) ?

MHM

[balaji.bandi]

What FTD code running on it ?

How is your FTD in place - Most of the time you see if anything point to default route or route loops to FTD ? or may be spoofed packets ?

Can you post complete log ?

is the IP part of your FTD outside IP ?

is this impacting your environment ?