Search Service setup behind f5 : An unrecognized HTTP response was received when attempting to crawl this item. Verify whether the item can be accessed using your browser.

I have 2 WFE behing F5 that handles ssl termination too. I have a site abc.xyz.com.

At aam i have

http://abc.xyz.com in default zone and https://abc.xyz.com in internal zone.

AT sharepoint content source; I have both http and https of the above site version.

DNS entry of abc.xyz.com is pointing at VIP in f5 which load balances this site at 2 different ips assigned to each web front end server.

Now when i run search in this content source, searchable item populates but there is error for http request telling An unrecognized HTTP response was received when attempting to crawl this item. Verify whether the item can be accessed using your browser. Why is this happening?

Is it because requests are coming to f5 as https but search is returning it as http? Will SSL termination removal from f5 solve this issue which i really don't want to do? Will pointing dns entry to two ips in wfe instead of f5 VIP will work?

Adit