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Hello,

On Sat, Jan 04, 2003 at 06:56:33PM +0100, Pavel Cahyna wrote:

> Would be possible to emulate the missing
> multicast support by setting promiscuitous mode and selecting only those
> packet that are relevant? I've heard Linux does this. This may apply to
> Ethernet also.

I can't tell what Tokenring hardawre or the the specific card can do, but in
NetBSD, this would be a function
of the network hardware driver (e.g., the hardware driver would need to cou=
nt
the number of multicast addresses, enable promiscuious receive mode if > 0,=
=20
and set the IFF_MULTICAST and IFF_ALLMULTI modes.=20

The filtering is then done at the network (e.g. IP, IPv6) level. It is done
anyway because even multicast-filtering hardware does no perfect filtering,
but hasing, and so is leaking.

Somebody please corret me if I'm wrong.

	-is

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