BIRD continues exporting routes but reports no exports

[Hugo Slabbert]

Was this perhaps 3f477ccb
<https://gitlab.nic.cz/labs/bird/-/commit/3f477ccb03ed99cf6754baaca179fcf791bcda55>
?

Filters: Function body comparison result now used.
> Function bodies were compared in post-parse time, yet the result was not
> used and the functions were incorrectly considered the same as before.



Now the result is used to reload affected protocols.


On Thu, Mar 2, 2023 at 2:51 PM Hugo Slabbert <
hugo.slabbert at menlosecurity.com> wrote:

> ah, right, apologies.
>
> bird 2.0.7-4.1 on Debian 11.6, kernel  5.10.136-1
>
> Looks like 2.0.7 was released Oct 16 2019 (
> https://bird.network.cz/?download), so a fair chance we might be hitting
> this? It looks like something from 2.0.10 is available from the bullseye
> backports, with the most recent being 2.0.12 in bookworm or sid. I'll look
> at pulling one of those in to validate.
>
> ...where changes in functions sometimes got ignored.
>
>
> This might be reaching, but would that explain the difference between
> what's shown in route export status output versus what's actually being
> exported?
>
> On Thu, Mar 2, 2023 at 2:39 PM Maria Matejka via Bird-users <
> bird-users at network.cz> wrote:
>
>> 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
>>
>
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