On Fri, 14 Oct 2016, JORDI PALET MARTINEZ wrote:


I’ve discovered, several months ago already, that all the 1&1 web sites with IPv6 support enabled are broken, because they filter PMTUD, so any residential customer with has a reduced MTU because PPP or any other encapsulation/tunnel, etc., is not reaching them.

Do you have an example of a website they host that I can test against?

Mikael Abrahamsson    email: swm...@swm.pp.se

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