Which HSL Log Filter Source will give me Load Balancing decisions?

Howdy,

 

I'd like to HSL to SPLUNK all Load Balancing decisions made. I'd like to be able to readily audit:

 

SRC IP X.X.X.X Accessed VIP Y.Y.Y.Y and was Load Balanced to Pool member Z.Z.Z.Z

 

I was thinking one of the TMM Options in the Source Dropdown should get me there, but hoping someone can lend more light on this. I can do it with request Logging, but that means every request/response and I have to apply the profile to every VIP - not a fan of that road.

 

thanks!