nanog mailing list archives

Re: WIndows Updates Fail Via IPv6 - Update!


From: Fernando Gont <fgont () si6networks com>
Date: Tue, 5 Mar 2019 23:27:44 -0300

On 3/3/19 16:57, Jeroen Massar wrote:
On 2019-03-03 20:13, Mark Tinka wrote:


On 3/Mar/19 18:05, Jeroen Massar wrote:

IPv6 requires a minimum MTU of 1280.

If you cannot transport it, then the transport (the tunnel in this case) needs to handle the fragmentation of 
packets of 1280 down to whatever does fit in the tunnel.

As you know, IPv6 does not support fragmentation in transit. So that's
not an option.

The transport (tunnel) CAN support that kind of fragmentation.

Still, that's certainly not panacea. See:
https://tools.ietf.org/html/rfc7872

-- 
Fernando Gont
SI6 Networks
e-mail: fgont () si6networks com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492





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