WIndows Updates Fail Via IPv6 - Update!
Fernando Gont
fgont at si6networks.com
Wed Mar 6 02:30:02 UTC 2019
On 3/3/19 18:04, Mark Andrews wrote:
> There are lots of IDIOTS out there that BLOCK ALL ICMP. That blocks PTB getting
> back to the TCP servers. There are also IDIOTS that deploy load balancers that
> DO NOT LOOK INSIDE ICMP messages for redirecting ICMP messages to the correct
> back end. There are also IDOITS that rate limit PTB generation to ridiculously
> low rates. One should be able to generate PTB at line rate.
>
> Everyone that has configured mss-fix-up has contributed to misunderstanding that
> you can block ICMP. It is time we had a flag day to REMOVE mss-fix-up from all
> the boxes you control. We need to get PTB working and unfortunately that means
> that we need to stop pandering to admins who don’t know how IP is supposed to
> work. ICMP is NOT optional.
It would seem IETF's intention is to actually move away from
ICMPv6-based PMTUD, to the extent that is possible. (RFC4821).
Thanks,
--
Fernando Gont
SI6 Networks
e-mail: fgont at si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
More information about the NANOG
mailing list