In article <200302091840.h19Iet2j029787@marajade.sandelman.ottawa.on.ca>,
	Michael Richardson <mcr@sandelman.ottawa.on.ca> writes:
>   Is this a tcpdump of the external ethernet,

Yes.

> ... or of the pppoe?

No.

>   Do a tcpdump of the pppoe interface, which should remove one layer.

Here it is:

23:01:06.554789 PPPoE  [ses 0x3c8] 213.146.112.12 > 128.107.240.254: 2002:d592:700c::1 > 2001:4f8:4:b:2e0:81ff:fe21:6563: icmp6: echo request
23:01:06.975736 PPPoE  [ses 0x3c8] 128.107.240.254 > 213.146.112.12: 2001:4f8:4:b:2e0:81ff:fe21:6563 > 2002:d592:700c::1: icmp6: echo reply

[BTW: 128.107.204.254 isn't the nearest 6to4 router for my system it's the
 one for "ftp.netbsd.org".]

> I see no reason why the ingress filtering should catch you, but perhaps it
> has. Try toggling link2 on on stf0.

That doesn't help.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/