Need an iRule to stop LTM from responding to https via IP address

Hello

You could also specify the URI must have letters in:

when HTTP_REQUEST {

  Check if the host header contains one or more alpha characters  
 if {not ([string match -nocase {*[a-z]*} [HTTP::host]])}{  

     Host was either empty or an IP address, drop the request 
    drop 
 }  

}