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Date:      Wed, 17 Feb 2021 21:01:50 -0800
From:      Xin Li <delphij@delphij.net>
To:        freebsd-net@freebsd.org, FreeBSD stable <freebsd-stable@freebsd.org>
Cc:        Kristof Provost <kp@FreeBSD.org>
Subject:   [pf] stable/12: block by OS broken
Message-ID:  <37b0e157-8173-7fb7-7ca3-c4a8b2ad0b31@delphij.net>

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From: Xin Li <delphij@delphij.net>
Reply-To: d@delphij.net
To: freebsd-net@freebsd.org, FreeBSD stable <freebsd-stable@freebsd.org>
Cc: Kristof Provost <kp@FreeBSD.org>
Message-ID: <37b0e157-8173-7fb7-7ca3-c4a8b2ad0b31@delphij.net>
Subject: [pf] stable/12: block by OS broken

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Hi,

It appears that some change between 939430f2377 (December 31) and
b4bf7bdeb70 (today) on stable/12 have broken pf in a way that the
following rule:

block in quick proto tcp from any os "Linux" to any port ssh

would get interpreted as:

block drop in quick proto tcp from any to any port =3D 22

(and block all SSH connection instead of just the ones initiated from
Linux).

Cheers,


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