PPP profiles and queues

I have simple queues set and I want to include remote pptp connections handling.
There are insert-queue-before, parent-queue and queue-type properties for ppp profiles but documentation does not mention them.

Well, I’ve set parent-queue in profile, but when pptp connection is established I see no change in simple queues. I expected new simple queue would be created within specified parent queue.

After lots of fiddling i fond out that new queue got created only after I set rate-limit for profile.

As I did not find this documented I am posting here just in case someone else searches for the same issue.

I love you <3
Unfortunately it’s not dynamic and therefore doesn’t inherit anything from simple queues (like priorities, parents, etc).