Problems with load balancing problems on centos7

Issue type
no answer from service

OS Version/build
CentOS Linux release 7.3.1611

App version
Docker version 17.03.1-ce, build c6d412e

Steps to reproduce
Follow the docker “get-started” tutorial and the problem appear at part 3:services.

Everything seems ok when I “docker stack deploy” the docker-compose.yml, I can see the 5 containers running, but when I curl http://localhost I get no answer.

I retried from scratch on a new centos7 vm and had no problem this time …