If_bridge behaving as HUB

Hi.

I have a bridge setup with a number of vlan IF's as members. After a while traffic destined for one member IF are sent to all member IF's.

From man if_bridge:

A bridge works like a hub, forwarding traffic from one interface to
another. Multicast and broadcast packets are always forwarded to all
interfaces that are part of the bridge. For unicast traffic, the bridge
learns which MAC addresses are associated with which interfaces and will
forward the traffic selectively.

Has anyone else got this problem? How do I debug this?

Info:

su-2.05b# uname -a
FreeBSD hostname.domain.com 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #2: Fri Sep 15 13:26:01 CEST 2006 user@:/usr/obj/usr/src/sys/GENERIC i386

/Jon
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