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[drake127]

The issue still persists. :-(

I use Yahoo Finance and my firewall rule is to reject connections to 2a00:1288:80::/48.

[hellokitty2016]

I just submit a request to he support and yahoo support, provided tracepath result and explain it to both ends.  I am hoping someone from HE or Yahoo will take a look on it.   I will suggest  others to do the same. 

E

[stevance]

I have the same issue with Yahoo via the HE tunnel with my own IPv6 prefix via a BGP session with HE
Doing the same test curl --verbose --verbose https://mail.yahoo.com

I don't have such this issue, if I run this test from a server with its IPv6 not going through this tunnel.

Difficult also to find a Yahoo support to assist.

He support is answering but with no solution

[stevance]

I could test more the Yahoo issue with HE IPv6 tunnel.

My SIT tunnel uses MTU 1480

For Yahoo access, if I change the MTU of my server or computer to MTU from 1500 to 1480, it works fine, otherwise no.

It seems that PMTU with Yahoo is not well negociated.

What else could be done?

Eric

[hellokitty2016]

Hi,

my MTU is set to 1480 already.  I still can't get to https://finance.yahoo.com/  Can you try it from your end?

Thanks,

E

[kriteknetworks]

my MTU is set to 1480 already.  I still can't get to https://finance.yahoo.com/  Can you try it from your end?

Tried setting it to 1280?

[hellokitty2016]

I tried lower the MTU.  Anyways, I am able to get to finance.yahoo.com via IPv6..  Can other tries it and report back as well?