Excessive TLS handshake error logging

I am behind an Amazon ELB which gets probed with a lot of non-TLS traffic which fabio is logging as

invalid log msg: 2017/12/12 20:21:35 http: TLS handshake error from 10.65.241.135:19568: EOF

Note the "invalid log msg", I'd like to be able squash these messages by setting the log level to INFO or something but I don't think they are being logged properly to be filtered. It would be even more useful if the source ip address (upstream of the ELB) could be logged here in case this is misconfigured internal traffic (unlikely).