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Date: Sun, 22 Feb 2015 19:26:03 +0000
From: Bruce Simpson <bms@fastmail.net>
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To: Gleb Smirnoff <glebius@FreeBSD.org>
Subject: Re: svn commit: r279028 - in head/usr.sbin: . ifmcstat
References: <201502192242.t1JMgY3e045902@svn.freebsd.org>
 <54E6A68B.1090609@fastmail.net> <20150221005051.GT15484@FreeBSD.org>
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On 21/02/2015 00:50, Gleb Smirnoff wrote:
>    
>
> May be you refer to code that was always under #if 0, disabled due to
> difficulty to go through RB-trees via kvm(3)?

My bad - yes - this code was unfinished as of SVN rev 192923, it seems I 
ran into problems with RB-tree walks through KREAD().

To implement this as a sysctl, one might copy the backend implementation 
of getsourcefilter(3) and work from there, specifically the internal 
IP_MSFILTER socket option.

Bruce