Is BFD extractable from Bird?

[Nallan Chakravarthy, Sudarshan]

Hi Laurent,
I checked with the legal team. They don’t see any issues as long as the part of software(BFD) runs as a separate application under GPLv2
and doesn’t get linked to any of our proprietary code.

Having clarified that, I would be interested to know if there is a way to make Bird’s BFD implementation a standalone application.
Let me know.

Thanks,
Sudarshan
From: Nallan Chakravarthy, Sudarshan <Sudarshan.NallanChakravarthy at netapp.com>
Date: Tuesday, November 15, 2022 at 10:13 AM
To: Laurent GUERBY <laurent at guerby.net>, bird-users at trubka.network.cz <bird-users at trubka.network.cz>
Subject: Re: Is BFD extractable from Bird?
Hi Laurent,
Thanks for your response. Indeed a valid question.
I’m checking with my legal team on this.

Regards,
Sudarshan
From: Laurent GUERBY <laurent at guerby.net>
Date: Tuesday, November 15, 2022 at 7:15 AM
To: Nallan Chakravarthy, Sudarshan <Sudarshan.NallanChakravarthy at netapp.com>, bird-users at trubka.network.cz <bird-users at trubka.network.cz>
Subject: Re: Is BFD extractable from Bird?
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On Tue, 2022-11-15 at 10:48 +0000, Nallan Chakravarthy, Sudarshan via
Bird-users wrote:
> Hello Bird Team,
> I’m Sudarshan, a software developer at NetApp.
> I have been using Bird as a peer for testing BGP functionality of
> NetApp’s Ontap software stack. Thanks to the Bird community!
> I looked at Bird’s BFD implementation. Was wondering if it is even
> plausible to extract only the BFD functionality out of Bird
> and use it with our existing BGP implementation. I see that BFD is
> tightly integrated with Bird’s core software libraries and
> so it doesn’t look like a trivial lift and shift. That said, I wanted
> to check with this group to see if there is a way to do it.
>
> Appreciate your response.
>
> Thanks,
> Sudarshan

Hi Sudarshan,

Before looking at the technical aspects if you haven't done so I
suggest you reach for your company lawyers and ask them if using part
of software under the GNU GPL v2+ is okay for your netapp project or
not.

https://gitlab.nic.cz/labs/bird/-/blob/master/README
"This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version."

Sincerely,

Laurent
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