XFF matching in data group not working for redirect

HI ant77

I modified your irule slightly,

Adjust the comparison string to case-insensitive comparison,

Basically, the function you want can be achieved at present

when HTTP_REQUEST {
    if {[HTTP::has_responded] } {return}
        set CHECK_IP [lindex [lsearch -all -inline -not -exact [split [HTTP::header values X-Forwarded-For] "\{\} ,"] {}] 0]
		#log local0. "IP Address: $CHECK_IP"
        if { ([class match -- $CHECK_IP eq INTERNAL-USERS-XFF]) } {
		    #log local0. "match IP Address: $CHECK_IP"
            if { ([string tolower [HTTP::uri]] contains "/public/idsearch" ) } {
                HTTP::redirect "https://[HTTP::host]/private/IDSearch" 
                log local0. "IP Address: $CHECK_IP Matching INTERNAL-USERS-XFF => Redirecting to /private/IDSearch"
                return
            } else {
                HTTP::redirect "https://[HTTP::host]/Apublic/IDSearch" 
				#log local0. "Not match IP Address: $CHECK_IP"
        } 
    }
}

I hope I can help you

have a good day !!!