Using "route1" as a route id produces infinite loop

package com.paytrue.swakka;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;

public class InfLoopMain {

    public static void main(final String[] args) throws Exception {
        final DefaultCamelContext camelContext = new DefaultCamelContext();
        camelContext.start();

        final RouteBuilder route1 = new RouteBuilder() {
            @Override
            public void configure() {
                from("direct:in1")
                    .id("route1") // Note the name
                    .to("mock:test1");
            }
        };
        camelContext.addRoutes(route1);

        final RouteBuilder route2 = new RouteBuilder() {
            @Override
            public void configure() {
                from("direct:in2")
                    .to("mock:test2");
            }
        };
        // Infinite loop
        camelContext.addRoutes(route2);
    }
}