Sharepoint 2013 crawler traffic/localhost issue

Assuming that this is the Sharepoint Alternate Access Mapping + redirect headache. I wonder if you could rewrite the host header in the client's request to trick SP into not doing the redirect for your specific client IP?

Something like:

when HTTP_REQUEST {
  if { [IP::addr [IP::client_addr] equals a.b.c.d ] } {
    HTTP::header replace Host "hostnamethatspwants.example.com"
}