Re: IPv6 path MTU discovery not working (large number of retransmited TCP data packets)

Robert Elz <[email protected]> Tue, 27 May 2025 04:21:30 +0700

Newsgroups	gmane.os.netbsd.devel.network
Message-ID	<[email protected]>

    Date:        Mon, 26 May 2025 21:15:17 +0200
    From:        Jörg Sonnenberger  <[email protected]>
    Message-ID:  <[email protected]>

  | Is your default route using the public address also used in the ICMP6 
  | error or a link local address of the same suffix?

That would be useful to know normally, but it really shouldn't be
for a packet too big error (but is crucial for redirects, etc).

Packet too big can come from anywhere in the path, matching the
source addr to anything at all isn't going to be useful.  If we're
considering that for PMTUD, then I think that's broken.

kre