my $soap_url = 'http://www.someotheraddress/soap';

use SOAP::Lite
    +autodispatch =>
	uri   => 'http://www.someaddress/something' ,
	proxy => $soap_url ,
	on_fault => sub {
	    my ( $soap, $res ) = @_;
		die ref $res ? "FAULT: " . $res->faultstring
		    : "FAULT: " . $soap->transport->status, "\n"
			}
	;

##</code><code>##

proxy: transport protocol not specified
BEGIN failed--compilation aborted at ./TEST2.pl line 33.