Packet loss when connecting via IPv6

Nikos Mavrogiannopoulos n.mavrogiannopoulos at
Thu Jan 28 23:34:19 PST 2016

On Thu, 2016-01-28 at 21:01 +0100, Johannes Brechtmann wrote:

> > What MTU does the AnyConnect client set for the IPv6 link. And what
> > MTU does OpenConnect set?
> > 
> Sorry, got something wrong: AnyConnect doesn't connect to the server
> via IPv6 at all.
> Openconnect sets the MTU to 1350, setting it manually after 
> connextion
> is established to 1178 fixed it for me.
> Thanks for the hint to look at the MTU.

That's strange, an MTU less than 1280 cannot carry IPv6 packets.


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