This allows you to use the container IPv6 address for service registr…

…ation.

Add use_ipv6_address = "true" as a label to the labels in the docker
driver configuration in your job

config {
        labels = {
            use_ipv6_address = "true"
        }
}

client/driver/docker.go

@@ -854,6 +854,10 @@ func (d *DockerDriver) detectIP(c *docker.Container) (string, bool) {
 		}
 
 		ip = net.IPAddress
+		if d.driverConfig.Labels["use_ipv6_address"] == "true" {
+			ip = net.GlobalIPv6Address
+		}
+
 		ipName = name
 
 		// Don't auto-advertise IPs for default networks (bridge on