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Re: [IPv6] Something I don't understand



On Thu, 7 Sep 2023, BERTRAND Joël wrote:

But from LAN, IPv6 public network is unreachable. For example:
hilbert:[~] > ping6 www.google.fr
PING www.google.fr(par10s39-in-x03.1e100.net (2a00:1450:4007:807::2003))
56 data bytes

	On legendre (NetBSD server), tcpdump on wm2 (public interface) shows:
legendre# tcpdump -i wm2 -p ip6
09:28:19.696443 IP6 PREFIX:a10:d65d:64ff:feb4:9a3b >
par10s39-in-x03.1e100.net: ICMP6, echo request, seq 16, length 64
09:28:20.720469 IP6 PREFIX:a10:d65d:64ff:feb4:9a3b >
par10s39-in-x03.1e100.net: ICMP6, echo request, seq 17, length 64

	Thus, icmp packets received from lan side are sent to public interface,
but there is no answer.


Maybe it's an ISP issue? Can you ping your machines from the outside using, say,
an SDF.org account? Check if packets arrive on wm2 on legendre when you do
this.

-RVP


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