Inserting client-ip in the header using a profile?

Problem:

When customer uses the following irule it breaks connection, if he doesn't use the irule it works.

It appears that the initial page will load but the individual images do not load and the user gets disconnected.

Do we have a list of the valid headers we can use (or what F5 recommends) when inserting client-ip in the header using a profile?

Inserting Client-IP in the header is kind of messy...

Whats wrong with the rule he is using for client ip header insert, I suspect that’s where the problem is.

 rule Log_Visits {  
    when HTTP_REQUEST { 
      log local7.info "Client: [IP::remote_addr]:[TCP::remote_port] requesting file [URI::basename [HTTP::path]]" 
    } 
  }