Following instructions in ribbon-consul example I started consul with
consul agent -dev
then in parent folder of this example
mvn verify -Pconsul  -Dswarm.consul.url=http://localhost:8500
From what I gather this is the default location of consul, so I also ran it without, only to have the same result. Task eventually starts all services, however fails to register with consul, with output:
2017-08-25 16:54:00,324 INFO  [org.wildfly.swarm.runtime.deployer] (main) deploying time.war
2017-08-25 16:54:00,354 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-8) WFLYSRV0027: Starting deployment of "time.war" (runtime-name: "time.war")
2017-08-25 16:54:01,778 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-3) WFLYSRV0018: Deployment "deployment.time.war" is using a private module ("io.netty:main") which may be changed or removed in future versions without notice.
2017-08-25 16:54:01,923 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0018: Host default-host starting
2017-08-25 16:54:02,036 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-6) MSC000001: Failed to start service swarm.topology.register.time.http: org.jboss.msc.service.StartException in service swarm.topology.register.time.http: com.orbitz.consul.ConsulException: Invalid service address
    at org.wildfly.swarm.topology.deployment.RegistrationAdvertiser.start(RegistrationAdvertiser.java:79)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)
Caused by: com.orbitz.consul.ConsulException: Invalid service address
    at com.orbitz.consul.AgentClient.register(AgentClient.java:180)
    at com.orbitz.consul.AgentClient.register(AgentClient.java:184)
    at org.wildfly.swarm.topology.consul.runtime.Advertiser.advertise(Advertiser.java:65)
    at org.wildfly.swarm.topology.consul.runtime.ConsulTopologyConnector.advertise(ConsulTopologyConnector.java:60)
    at org.wildfly.swarm.topology.deployment.RegistrationAdvertiser.start(RegistrationAdvertiser.java:77)
    ... 5 more
2017-08-25 16:54:02,203 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 7) RESTEASY002225: Deploying javax.ws.rs.core.Application: class org.wildfly.swarm.generated.WildFlySwarmDefaultJAXRSApplication
2017-08-25 16:54:02,221 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 7) WFLYUT0021: Registered web context: /
2017-08-25 16:54:02,242 ERROR [org.jboss.as.controller.management-operation] (main) WFLYCTL0013: Operation ("add") failed - address: (("deployment" => "time.war")) - failure description: {
    "WFLYCTL0080: Failed services" => {"swarm.topology.register.time.http" => "org.jboss.msc.service.StartException in service swarm.topology.register.time.http: com.orbitz.consul.ConsulException: Invalid service address
    Caused by: com.orbitz.consul.ConsulException: Invalid service address"},
    "WFLYCTL0412: Required services that are not installed:" => ["swarm.topology.register.time.http"],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
2017-08-25 16:54:02,244 ERROR [org.jboss.as.server] (main) WFLYSRV0021: Deploy of deployment "time.war" was rolled back with the following failure message: 
{
    "WFLYCTL0080: Failed services" => {"swarm.topology.register.time.http" => "org.jboss.msc.service.StartException in service swarm.topology.register.time.http: com.orbitz.consul.ConsulException: Invalid service address
    Caused by: com.orbitz.consul.ConsulException: Invalid service address"},
    "WFLYCTL0412: Required services that are not installed:" => ["swarm.topology.register.time.http"],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
}
2017-08-25 16:54:02,250 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 7) WFLYUT0022: Unregistered web context: /
2017-08-25 16:54:02,254 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0019: Host default-host stopping
2017-08-25 16:54:02,272 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-7) WFLYSRV0028: Stopped deployment time.war (runtime-name: time.war) in 28ms
2017-08-25 16:54:02,273 INFO  [org.jboss.as.controller] (main) WFLYCTL0183: Service status report
WFLYCTL0186:   Services which failed to start:      service swarm.topology.register.time.http
2017-08-25 16:54:02,275 ERROR [stderr] (main) Exception in thread "main" java.lang.reflect.InvocationTargetException
2017-08-25 16:54:02,275 ERROR [stderr] (main)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2017-08-25 16:54:02,275 ERROR [stderr] (main)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2017-08-25 16:54:02,275 ERROR [stderr] (main)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2017-08-25 16:54:02,275 ERROR [stderr] (main)   at java.lang.reflect.Method.invoke(Method.java:498)
2017-08-25 16:54:02,275 ERROR [stderr] (main)   at org.wildfly.swarm.bootstrap.MainInvoker.invoke(MainInvoker.java:39)
2017-08-25 16:54:02,276 ERROR [stderr] (main)   at org.wildfly.swarm.bootstrap.MainInvoker.main(MainInvoker.java:92)
2017-08-25 16:54:02,276 ERROR [stderr] (main) Caused by: org.wildfly.swarm.container.DeploymentException: org.wildfly.swarm.container.DeploymentException: WFSWARM0004: Deployment failed: {"WFLYCTL0080: Failed services" => {"swarm.topology.register.time.http" => "org.jboss.msc.service.StartException in service swarm.topology.register.time.http: com.orbitz.consul.ConsulException: Invalid service address
2017-08-25 16:54:02,276 ERROR [stderr] (main)     Caused by: com.orbitz.consul.ConsulException: Invalid service address"},"WFLYCTL0412: Required services that are not installed:" => ["swarm.topology.register.time.http"],"WFLYCTL0180: Services with missing/unavailable dependencies" => undefined}
2017-08-25 16:54:02,276 ERROR [stderr] (main)   at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:301)
2017-08-25 16:54:02,276 ERROR [stderr] (main)   at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:174)
2017-08-25 16:54:02,276 ERROR [stderr] (main)   at org.wildfly.swarm.container.runtime.RuntimeDeployer$Proxy$_$$_WeldClientProxy.deploy(Unknown Source)
2017-08-25 16:54:02,277 ERROR [stderr] (main)   at org.wildfly.swarm.Swarm.deploy(Swarm.java:467)
2017-08-25 16:54:02,277 ERROR [stderr] (main)   at org.wildfly.swarm.examples.netflix.ribbon.time.Main.main(Main.java:19)
2017-08-25 16:54:02,277 ERROR [stderr] (main)   ... 6 more
2017-08-25 16:54:02,278 ERROR [stderr] (main) Caused by: org.wildfly.swarm.container.DeploymentException: WFSWARM0004: Deployment failed: {"WFLYCTL0080: Failed services" => {"swarm.topology.register.time.http" => "org.jboss.msc.service.StartException in service swarm.topology.register.time.http: com.orbitz.consul.ConsulException: Invalid service address
2017-08-25 16:54:02,278 ERROR [stderr] (main)     Caused by: com.orbitz.consul.ConsulException: Invalid service address"},"WFLYCTL0412: Required services that are not installed:" => ["swarm.topology.register.time.http"],"WFLYCTL0180: Services with missing/unavailable dependencies" => undefined}
2017-08-25 16:54:02,278 ERROR [stderr] (main)   at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:296)
2017-08-25 16:54:02,278 ERROR [stderr] (main)   ... 10 more
This is repeated for every time and event service started. Frontend reports consul service at http://:8300.
Starting main methods from idea with offset will perform fine (tho frontend returns 403:forbidden, but that is an another issue)
Is there something I am missing, because this seems like a pretty simple example to be bugged?
Versions of examples affected are 2017.9.0-SNAPSHOT and 2017.8.1.