Date: Thu, 18 Oct 2012 14:41:10 -0700 From: David Wolfskill <david@catwhisker.org> To: net@freebsd.org Subject: Seeing "rn_addmask: mask impossibly already in tree" on console Message-ID: <20121018214110.GE1817@albert.catwhisker.org>
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--gRZ38brEgCoUohoa Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Running: FreeBSD g1-227.catwhisker.org 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #273 24= 1679M: Thu Oct 18 04:52:24 PDT 2012 root@g1-227.catwhisker.org:/usr/obj= /usr/src/sys/CANARY i386 on my laptop, at times when I switch from X to vty0, I see (e.g.): Oct 18 08:27:07 g1-227 kernel: rn_addmask: mask impossibly already in treer= n_addmask: mask impossibly already in treern_addmask: mask impossibly alrea= dy in treern_addmask: mask impossibly already in treern_addmask: mask impos= sibly already in treern_addmask: mask impossibly already in treern_addmask:= mask impossibly already in tree... I see where the message is issued (sys/net/radix.c:539 @r210122, last updated 2010-07-15 14:41:59Z). As this is a laptop, and thus subject to being connected to networks I do not control, I run a packet filter on it, and the one with which I happen to be most familair is ipfw. Thus that's what I use. So it's possible that either ipfw or routing is driving rn_addmask(). However, I'm unclear on: * What (specifically) is actually causing this. * Whether or not it's enough of an issue or problem that I should take evasive action. Put differently: what is my exposure here? * If so, what sort of evasive action is appropriate for me to take. I suppose I could try a packet-capture, but the lack of timestamps make correlating the message-issuance with particular packets a little more challenging than I'd prefer. I note, too, that I'm running a very similar ipfw configuration on the packet-filter machine here at home; while I find the above- quoted whines in /var/log/console.log on the laptop, I do not find them mentioned in that file for the packet filter machine. Clues? [Please include me in the recipient list, as I'm not subscribed to net@; I've set Reply-To as a hint.] Thanks! Peace, david --=20 David H. Wolfskill david@catwhisker.org Taliban: Evil men with guns afraid of truth from a 14-year old girl. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --gRZ38brEgCoUohoa Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlCAd3UACgkQmprOCmdXAD1x+wCfTfmvzlGbIzPcoS7pv4HhdvJC VecAn1FFqYD2W2Zkjb9rjwNxNfqg8wOE =DPnx -----END PGP SIGNATURE----- --gRZ38brEgCoUohoa--
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