Date: Tue, 23 Nov 2004 22:20:10 +0000 (GMT) From: Robert Watson <rwatson@freebsd.org> To: Iasen Kostov <tbyte@OTEL.net> Cc: freebsd-hackers@freebsd.org Subject: Re: setting promisc mode kills vlans on devices with hwtagging (em, re ...) Message-ID: <Pine.NEB.3.96L.1041123221854.98085B-100000@fledge.watson.org> In-Reply-To: <41A292D8.4050904@OTEL.net>
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On Tue, 23 Nov 2004, Iasen Kostov wrote: > if you setup a vlan devices with parent one of emX or reX (this what I > have at the moment) which has hardware vlan tagging just try to run > tcpdump (without -p) and the vlans will die :). That doesn't happen with > parent devices not supporting hwtagging. And this totally excludes > possibility to run a bridge over vlans with parent device which support > hwtaggs. And something else was observed with re driver - it is > impossible to disable hwtaggs by -vlanhwtag neither you can disable vlan > mtu :). I recently fixed this bug in if_em in HEAD, and will be merging that back to RELENG_5 shortly. We plan to also merge the change to RELENG_5_3 as an errata patch fix. It does not surprise me that if_re has a similar bug; I'll look at abstracting the solution in the next few days. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research
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