On Mon, 12 Nov 2018, Mark Tinka wrote:
I do run 6-in-4 from my backbone to my house as my FTTH provider does
not do IPv6.
I can't imagine this to specifically be the issue, as all other IPv6
traffic is fine, but at this point, I'm open to suggestion.
Are you doing TCP MSS adjust/clamping? If you don't, try that and see if
it helps. This might be a PMTUD issue.
Otherwise if possible, try lowering the MTU sent in RA to the one you have
on your tunnel (this depends on if this is available to you in your RA
sending device).
--
Mikael Abrahamsson email: swm...@swm.pp.se
