In RemoteIpFilter class, there is code that publishes the new request attributes to AccessLog (see below).

821             if (requestAttributesEnabled) {
822                 request.setAttribute(AccessLog.REMOTE_ADDR_ATTRIBUTE,
823                         request.getRemoteAddr());
824                 request.setAttribute(AccessLog.REMOTE_HOST_ATTRIBUTE,
825                         request.getRemoteHost());
826                 request.setAttribute(AccessLog.PROTOCOL_ATTRIBUTE,
827                         request.getProtocol());
828                 request.setAttribute(AccessLog.SERVER_PORT_ATTRIBUTE,
829                         Integer.valueOf(request.getServerPort()));
830             }

The problem is that the source values should come from xRequest, e.g. xRequest.getRemoteAddr() and xRequest.getRemoteHost(), etc.

As it is written above, RemoteIpFilter simply republishes the current values, and AccessLog therefore does not display the correct values.