Github user remibergsma commented on the pull request:
https://github.com/apache/cloudstack/pull/1471#issuecomment-219029943
@jburwell Had a look at the `wait_until` method and I don't think it will
work well here. The problem is that when the router restarts, it has the full
config in `/etc/cloudstack/*.json` but several interfaces are not yet available
as they are plugged later. By using `wait_ultil` and try every 2s for max of
15s, we get the old behaviour of having to wait 15s in case the interface is
not there. When the interface _is_ there, it will go through almost
immediately. I propose to keep it like this as I've seen it speedup start times
quite a bit.
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