@Override
        public boolean parseClientIpAndPort(Span span) {
            return parseClientIpFromXForwardedFor(span) || SpanTags.updateRemoteEndpoint(span, ctx);
        }
This sets the client IP:port to the {@link RequestContext#remoteAddress()}
if the {@linkplain #parseClientIpFromXForwardedFor default parsing} fails.
brave/brave6/src/main/java/com/linecorp/armeria/server/brave/ServiceRequestContextAdapter.java