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From: bugzilla-noreply@freebsd.org
To: bugs@FreeBSD.org
Subject: [Bug 291163] feature request: blacklist-helper support for route
 --blackhole
Date: Tue, 25 Nov 2025 01:51:52 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291163

--- Comment #1 from Jose Luis Duran <jlduran@FreeBSD.org> ---
Thank you for sharing your ideas regarding blocklistd.

With respect to this particular request, I can initially think of:

1. Using a custom control script:
You can use your own control script with the functionality you wish to have=
.=20
For example:

    cp /usr/libexec/blocklistd-helper /usr/libexec/my-blocklistd-helper

Configure blocklistd to use your control script:

    sysrc blocklistd_flags=3D"-C /usr/libexec/my-blocklistd-helper"

Change the "add", "rem", and "flush" actions to achieve whatever you are
looking for.  For example:

    add) ...
        route add -blackhole ${addr}/${mask} <gateway>

If your routing daemon redistributes static routes, you'll achieve your
objective.  The opposite can be done for "rem", and optionally "flush".

2. Suggest pre/post action hooks upstream:
Given we are a downstream of https://github.com/zoulasc/blocklist, I'd sugg=
est
opening the feature request upstream.  Maybe with the option to add pre/post
hooks to the control script actions.  In this case, you would just attach y=
our
custom functionality to the post-add/rem hooks, for example.

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