BIRD continues exporting routes but reports no exports

[Maria Matejka]

Hello!


> We've tried adding a sleep between when the include snippet that changes 
> the DRAIN_NODE  value is written and when we hit `birdc configure`, but 
> that doesn't appear to make any difference. If we execute `birdc 
> configure` *twice*, though, everything's fine: The actual exports are 
> stopped. That's true without any sleep or break between running 
> configure as well; literally just `birdc configure` back to back in the 
> script that manages this.
> 
> We do not see any indication of issues in the `birdc configure` runs or 
> in BIRD's logs.

You are not disclosing the version of BIRD you are using. I vaguely 
remember that we fixed this kind of bug several years ago where changes 
in functions sometimes got ignored.

Thus if you are not using a recent BIRD version, you are probably 
hitting that old bug.

Maria