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Date:      Sat, 14 Jul 2001 22:07:43 -0300
From:      "Daniel C. Sobral" <dcs@newsguy.com>
To:        freebsd-net@freebsd.org
Subject:   802.1q and multicasting
Message-ID:  <3B50ECDF.618ED83C@newsguy.com>

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I discovered a curious problem while trying to set up some firewalls. I
do not receive multicast packets through 802.1q (vlan tagging) unless
I'm doing a tcpdump on the interface. My first thought was that this was
promiscuous mode-related, but I tried calling ifpromisc() from if_up()
on sys/net/if.c and that didn't help. I tried to find out what else was
different when this was done through bpf, but aside a bpf flag I
couldn't find anything.

Anyone has any clues or insights?

-- 
Daniel C. Sobral			(8-DCS)
dcs@newsguy.com
dcs@freebsd.org
capo@the.secret.bsdconspiracy.net

	wow regex humor... I'm a geek

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