Date: Wed, 1 Dec 2004 19:06:16 +0100 From: Max Laier <max@love2party.net> To: freebsd-net@freebsd.org Cc: Mike Wolman <mike@nux.co.uk> Subject: Re: em, vlan and pf troubles Message-ID: <200412011906.23421.max@love2party.net> In-Reply-To: <20041130204100.A50634@black.eros.office> References: <20041130204100.A50634@black.eros.office>
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--nextPart2375476.OhgcbjOL2O Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Tuesday 30 November 2004 22:17, Mike Wolman wrote: > Hi, > > I am having a problem with 5.3 release with pf, vlans and the em device. <...> > I have had a hunt on the lists and found: > > http://marc.theaimsgroup.com/?l=3Dfreebsd-net&m=3D110172867801777&w=3D2 =46rom what I know about this problem, it is possible that trying to analyz= e to=20 problem creates the problem in the first place. i.e. if you tcpdump on the= =20 em-card (or the vlan for the same reason) it will screw up the vlan hardwar= e=20 support. A fix has been committed, but it might be the case that the fix=20 wasn't 100% correct (esp. when there are 3+ vlans on the interface). Is is possible that you switched to dhcp for these boxes? If you run dhclie= nt=20 on em0 it will open a bpf-socket which seems to be the root of the em+vlan= =20 troubles. I doubt that pf plays a part in this game. > I am not sure if this is related but suspect it is - if so will adding a > different card from a different vendor fix this? (the machine is at a > remote location but if this will fix the problem off i go) Using a card w/o hardware supported vlan tagging might help, but you obviou= sly=20 lose the benefit. I am not sure if you can turn off the h/w-support on the= =20 em-card, but that's sure worth a try. Tell us if it helpped. =2D-=20 /"\ Best regards, | mlaier@freebsd.org \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | mlaier@EFnet / \ ASCII Ribbon Campaign | Against HTML Mail and News --nextPart2375476.OhgcbjOL2O Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBrggfXyyEoT62BG0RAk+7AJ9OCdbLotlEOZJQuThTj/6wotEB5wCeJGij q81ycBLqvoFYgLmRYOl/LuQ= =RZQE -----END PGP SIGNATURE----- --nextPart2375476.OhgcbjOL2O--
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