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Hello,

Feico Dillema wrote:

> I am trying to send and receive multicast UDP packets between a
> NetBSD 1.6.2 and a NetBSD 2.0.1 machine. This works fine:
>=20
> machine1> mcastread -v6 ex0 FF05::114 2500
> machine2> mcastsend FF05::114 2500 README
>=20
> but using link-local scope does not:
>=20
> machine1> mcastread -v6 ex0 FF02::114 2500
> machine2> mcastsend FF02::114 2500 README

Just a data point:

I use ping6 ff02::1%cs0 etc. all the time to test the local network.
If ff05:... didn't work, I'd suggest to check the specific drivers's=20
multicast handling... IPv6 support was what led me to fix (e.g.) if_iy.c
multicast handling.

This was with 1.6.*, 2.0 and 3.99.2 kernels, on i386, arm and m68k,
using cs, ep, ex, fxp, iy, ne, rtk (not all combinations checked).

Regards,
	-is

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